Leucine Series-Nantong East acides aminés Co., Ltd

Leucine is an essential branched-chain amino acid for the human body. It features core functions including promoting protein synthesis, enhancing muscle strength, regulating blood sugar and boosting immunity. It is widely applied in pharmaceuticals, food, health products, feed additives and other fields. Its derivatives, such as CBZ-, BOC- and FMOC-protected forms, are key intermediates for peptide synthesis and drug research and development.

(1) Leucine and Derivatives

1	L-tert-Leucine	20859-02-3	Core chiral pharmaceutical intermediate for anti-AIDS and anti-cancer drugs, peptide synthesis chiral unit, asymmetric catalysis ligand, raw material for food fortification and sports health products.
2	D-β-Homoleucine	138751-02-7	Chiral pharmaceutical R&D intermediate, raw material for optically active compound synthesis, biochemical reagent, applied in high-end antibiotics and enzyme inhibitor production.
3	H-Leu-OtBu·HCl	2748-02-9	Protected peptide synthesis intermediate, drug construction raw material, organic synthesis reagent, core material for high-end peptide and chiral drug manufacturing.
4	2-Methylleucine	29589-03-5	Pharmaceutical intermediate for protease inhibitor synthesis, peptide modification unit, fine chemical raw material, used in new antihypertensive and neuroprotective drug development.
5	H-Leu-Oall·TosOH	88224-03-7	Allyl-protected peptide synthesis intermediate, pharmaceutical raw material, easily deprotected organic reagent, widely used in long-chain peptide and antibody drug synthesis.
6	6-Diazo-5-oxo-L-Nor-Leucine	157-03-9	Anti-tumor intermediate, biochemical reagent for purine synthesis inhibition, drug lead compound for preclinical anti-cancer research.
7	DL-Norleucine	616-06-8	Feed additive for livestock growth promotion, industrial nutritional fortifier, general organic synthesis intermediate with wide industrial application.
8	D-Leucinol	53448-09-2	Chiral pharmaceutical intermediate, optically active alcohol raw material, biochemical reagent for high-end antibiotic and enzyme inhibitor synthesis.
9	L-β-Homovaline HCl	219310-09-5	Peptide synthesis intermediate, pharmaceutical R&D raw material, biochemical experimental reagent for novel peptide and bioactive molecule preparation.
10	D-Tert-Leucinol	112245-09-7	Optically active synthesis raw material, chiral pharmaceutical intermediate, resolution reagent for new chiral drug development.
11	D-Leucinamide hydrochloride	80970-09-8	Peptide synthesis intermediate, pharmaceutical raw material, biochemical reagent for peptide drug and bioactive compound production.
12	N-Acetyl-L-Leucine methyl ester	1492-11-1	Peptide synthesis intermediate, drug modification raw material, organic ester reagent for antibiotic and antiviral drug research.
13	MOC-L-Norleucine	162537-11-3	MOC-protected peptide intermediate, pharmaceutical raw material, organic reagent for peptide drug and fine chemical synthesis.
14	N-Chloroacetyl-L-Leucine	688-12-0	Antibacterial pharmaceutical intermediate, peptide modification raw material, acylation reagent for antibiotic and antiviral manufacturing.
15	L-tert-Leucine-N-methylamide	89226-12-0	Peptide synthesis intermediate, pharmaceutical raw material, organic reagent for bioactive molecule and peptide drug synthesis.
16	L-tert-Leucinamide hydrochloride	75158-12-2	Chiral pharmaceutical intermediate, peptide synthesis raw material, core material for high-end chiral peptide and fine chemical production.
17	R-Tetrahydropapaverine N-Acetyl-L-Leucinate	141109-12-8	Pharmaceutical intermediate, analgesic raw material, biochemical reagent for pharmaceutical formulation and laboratory research.
18	L-Tert-Leucinol	112245-13-3	Chiral pharmaceutical intermediate, asymmetric catalysis ligand, core raw material for chiral catalyst and high-end drug synthesis.
19	N-Acetyl-L-Leucine	99-15-0	Food flavor enhancer and nutrition fortifier, feed additive, general organic intermediate widely used in food and feed industry.
20	Acetyl-DL-Norleucine	7682-16-8	Organic synthesis intermediate, industrial acetylation raw material, laboratory reagent for industrial peptide and chemical intermediate production.
21	H-Leu-OMe·HCl	7517-19-3	Key peptide synthesis intermediate, drug modification raw material, core material for oral peptide drugs and nutritional fortifiers.
22	Ethyl thiooxamate	16982-21-1	Organic synthesis intermediate, pharmaceutical R&D raw material, common laboratory chemical reagent.
23	N-Acetyl-L-Leucine	1188-21-2	Clinical pharmaceutical raw material for vertigo and hepatic encephalopathy treatment, food additive, acetylated peptide synthesis intermediate.
24	Methyl 1-Aminocyclopentanecarboxylate HCl	60421-23-0	Pharmaceutical synthesis intermediate, organic ester raw material, reagent for central nervous system and antibacterial drug development.
25	DL-alpha-Methylleucine	144-24-1	Organic synthesis intermediate, drug skeleton construction raw material, general laboratory research reagent.
26	D-Norleucine	156-24-1	Chiral pharmaceutical intermediate for enzyme inhibitor synthesis, optical resolution reagent, core raw material for high-end chiral peptide drugs.
27	DL-Leucic acid Isopropyl ester	156276-25-4	Industrial organic ester intermediate, auxiliary laboratory reagent for mass peptide synthesis and chemical raw material production.
28	E-64	66701-25-5	Protease inhibitor research reagent, anti-tumor drug lead compound, core tool reagent for biomedical screening.
29	Leu-Enkephalin	58822-25-6	Bioactive peptide research reagent, analgesic pharmaceutical raw material, biochemical experimental reagent for peptide drug research.
30	Chloroacetyl-DL-Norleucine	67206-26-2	Industrial acylation intermediate, chemical raw material for large-scale pharmaceutical and fine chemical manufacturing.
31	Methyl-L-Norleucine	17343-27-0	Peptide synthesis intermediate, drug skeleton raw material, reagent for new antibacterial and immunomodulatory drug development.
32	L-Norleucine	156-27-4	Bioactive peptide synthesis raw material, biomedical research reagent, branched-chain amino acid additive for health products and medical beauty peptides.
33	H-Tle-OMe·HCl	63038-27-7	Chiral catalytic intermediate, peptide modification unit, core raw material for anti-AIDS drugs and asymmetric catalysts.
34	L-Nor-L-Leucine	80696-29-3	Peptide synthesis intermediate, organic building block for long-chain peptide and bioactive molecule preparation.
35	N-Ac-D-Leu-OH	19764-30-8	Chiral pharmaceutical R&D intermediate, optical resolution reagent, fine chemical raw material for optically active compound synthesis.
36	L-6-hydroxynorleucine	6033-32-5	Hydroxylated peptide intermediate, water-soluble drug modification raw material, applied in injectable peptide and biological agent development.
37	H-D-LEU-OTBU HCL	13081-32-8	Chiral peptide synthesis unit, pharmaceutical intermediate, core raw material for high-end chiral peptide and fine chemical products.
38	D-Norleucine methyl ester hydrochloride	60687-33-4	Chiral peptide raw material, pharmaceutical intermediate, biochemical reagent for high-end chiral drug production.
39	N-Methyl-L-Leucine	2566-33-8	Industrial methylation intermediate, general organic reagent for pharmaceutical and chemical intermediate mass production.
40	DL-β-Homoleucine	3653-34-7	General chiral organic intermediate, laboratory auxiliary reagent for conventional peptide synthesis and chemical manufacturing.
41	H-D-Leu-OtBu·HCl	67617-35-0	Chiral pharmaceutical intermediate, protected peptide unit, core raw material for high-end chiral peptide synthesis.
42	L-Leucine benzyl ester hydrochloride	2462-35-3	Benzyl-protected peptide intermediate, pharmaceutical raw material for long-chain peptide and antibody drug preparation.
43	H-Leu-βNA · HCl	893-36-7	Biochemical detection reagent for leucylpeptidase activity, core raw material for clinical diagnosis and biological analysis.
44	N-Acetyl-L-Leucine ethyl ester	4071-36-7	Food flavoring additive, pharmaceutical intermediate, organic reagent for external drug formulation.
45	D-Leucine	328-38-1	Chiral intermediate for antibiotic and antiviral drugs, peptide synthesis raw material, core material for optically active pharmaceutical products.
46	4-Fluoro-L-Leucine ethyl ester	156047-39-1	Fluorinated pharmaceutical intermediate, peptide fluorination modification raw material, high-value reagent for new fluorinated drug development.
47	DL-Leucine	328-39-2	Low-cost feed additive for livestock growth, industrial nutritional fortifier, mainstream bulk organic intermediate.
48	N-Formyl-D-Leucine	44978-39-4	Chiral pharmaceutical intermediate, optical resolution raw material for novel chiral reagent development.
49	D-tert-Leucine hydrochloride	112720-39-5	Chiral resolution intermediate, fine chemical raw material for high-end chiral drug and optically active compound synthesis.
50	H-Leu-Oet·HCl	2743-40-0	Peptide synthesis intermediate, food flavor enhancer, pharmaceutical raw material for oral peptide drugs and nutritional products.
51	L-Leucine Nitrate	151894-40-5	Pharmaceutical formulation stabilizer, laboratory oxidant, organic reagent for fine chemical processing.
52	L-(+)-Leucinol	7533-40-6	Amino acid derivative intermediate, peptide modification raw material, used in nervous system and antidepressant drug research.
53	N-Acetyl-L-leucine-p-nitroanilide	19746-40-8	Chromogenic biochemical reagent for protease activity detection, key tool for biological screening and pharmaceutical analysis.
54	MOC-Norleucine	911481-41-9	MOC-protected norleucine intermediate, pharmaceutical raw material for peptide drug and fine chemical synthesis.
55	Bestatin hydrochloride	65391-42-6	Protease inhibitor, anti-tumor and immunomodulatory raw material, core reagent for biomedical research and anti-cancer development.
56	3-Methylvalinamide	113582-42-6	Organic synthesis intermediate, general laboratory reagent for pharmaceutical chemical intermediate production.
57	D-tert-Leucine Methyl Ester HCl	167223-43-0	Chiral pharmaceutical intermediate, fine chemical raw material for novel chiral catalyst and high-end drug synthesis.
58	(2S)-2-Acetamido-4-Methylpentanoate	608141-43-1	Pharmaceutical intermediate, analgesic raw material, biochemical reagent for formula research and laboratory testing.
59	L-tert-Leucine hydrochloride	139163-43-2	Stable chiral peptide raw material, pharmaceutical intermediate, high-demand core material for chiral drug manufacturing.
60	Tetrakis[N-phthaloyl-(S)-tert-leucinato]dirhodium Bis(ethyl Acetate) Adduct	154090-43-4	High-efficiency asymmetric catalysis catalyst, organic synthesis reagent for advanced organic and pharmaceutical research.
61	L-β-Homoleucine	22818-43-5	Peptide modification building block, pharmaceutical intermediate for novel peptide drug and enzyme inhibitor synthesis.
62	H-LEU-AMC HCL	62480-44-8	Fluorescent probe for protease detection, high-sensitivity reagent for biological analysis and drug high-throughput screening.
63	H-Tle-OtBu·HCl	119483-45-3	Protected tert-leucine intermediate, chiral synthesis unit for high-end peptide and custom chiral drug production.
64	N-Methyl-L-Leucine	3060-46-6	Protease inhibitor synthesis intermediate, peptide modification unit, raw material for antifungal and immunosuppressant drugs.
65	N-Ac-Nle-OH	15891-49-3	Acetylated norleucine derivative, peptide synthesis intermediate for enzyme inhibitor and high-end peptide drug preparation.
66	H-Leu-NH2	687-51-4	Amidated peptide intermediate, pharmaceutical raw material for anti-tuberculosis and anti-inflammatory drug synthesis.
67	Cycloleucine	52-52-8	Cyclic amino acid intermediate, arginase inhibitor, raw material for antibacterial and liver-protective drug development.
68	L-Leucine tert-butyl ester hydrochloride	21691-53-2	Tert-butyl protected peptide intermediate, drug building block for fine chemical and custom peptide synthesis.
69	H-D-Leu-OMe·HCl	5845-53-4	Chiral leucine methyl ester intermediate, core raw material for high-end chiral peptide and bioactive compound synthesis.
70	H-DL-Leu-Ome·HCl	6322-53-8	Bulk industrial peptide raw material, cost-effective intermediate for large-scale chemical and peptide production.
71	DL-β-Leucine	5699-54-7	Industrial β-amino acid intermediate, conventional laboratory reagent for mass chemical synthesis.
72	H-D-Nle-OH	327-56-0	Chiral D-norleucine, pharmaceutical intermediate for cardiovascular and hypoglycemic new drug research.
73	2-dioxo-Cyclohexane derivatives	122341-56-4	Cyclic organic intermediate, industrial chiral raw material for general fine chemical manufacturing.
74	L-Norleucine	327-57-1	Biomedical research raw material, health product fortifier, basic material for medical beauty and functional peptide production.
75	H-DL-Leu-NH2·HCl	10466-60-1	Industrial amide intermediate, daily laboratory reagent for mass peptide and chemical raw material processing.
76	H-Leu-NH2·HCl	10466-61-2	Water-soluble leucinamide salt, high-purity reagent for injectable peptide drugs and biological preparations.
77	N-Formyl-L-Leucine	6113-61-7	Formylated peptide intermediate, raw material for long-chain peptide and complex bioactive molecule synthesis.
78	N-3,5-Dinitrobenzoyl-L-phenyl glycine	90761-62-9	High-efficiency chiral resolution reagent, key auxiliary material for chiral drug separation and purification.
79	H-D-Leu-Oet·HCl	73913-65-2	Chiral ethyl ester intermediate, biochemical reagent for high-purity chiral peptide and targeted drug synthesis.
80	2-(1H-indol-3-yl)-4-Oxo-4-Phenylbutanoic acid	6266-66-6	Anti-inflammatory and anti-tumor pharmaceutical intermediate, aromatic bioactive building block for new drug development.
81	H-N-Me-Leu-OBzl·TosOH	42807-66-9	Methylated benzyl protected leucine, high-end intermediate for customized peptide and complex chiral drug synthesis.
82	Bz-DL-Leu-OH	17966-67-5	Benzoylated industrial intermediate, bulk raw material for large-scale peptide synthesis and fine chemical production.
83	N-Methyl-L-Leucine hydrochloride	66866-69-1	Methylated leucine salt, peptide modification reagent for high-end pharmaceutical and fine chemical preparation.
84	DL-tert-Leucine 1,1-dimethylethyl ester HCl	1028251-69-5	Bulk protected tert-leucine intermediate, industrial reagent for mass chemical and peptide raw material production.
85	Bortezomib	179324-69-7	Clinical targeted anti-tumor proteasome inhibitor, first-line therapeutic drug for multiple myeloma and lymphoma.
86	Leucine Dehydrogenase	9082-71-7	Biocatalytic enzyme reagent, clinical diagnostic enzyme for amino acid detection, widely applied in biocatalysis and medical testing.
87	D-tert-Leucine	26782-71-8	High-value chiral raw material, core intermediate for optically active drug and asymmetric synthesis research.
88	H-Tle-OtBu·HCl	31556-74-8	Stable protected tert-leucine intermediate, universal building block for high-end peptide and chiral drug customization.
89	Ubenimex	58970-76-6	Clinical immunomodulatory anti-tumor drug, used for leukemia and myeloma adjuvant treatment with stable market demand.
90	H-Leu-OBzl·TosOH	1738-77-8	High-purity benzyl tosylate intermediate, precision laboratory reagent for high-end peptide drugs and biological agents.
91	DL-tert-Butylglycine	33105-81-6	Bulk chiral amino acid intermediate, daily industrial reagent for conventional peptide and fine chemical synthesis.
92	N-Methyl-L-Leucine allyl ester	753487-82-0	Methylated allyl protected intermediate, pharmaceutical raw material for peptide drug and fine chemical synthesis.
93	Benzoyl-L-Leucine	1466-83-7	Benzoyl-protected leucine, core intermediate for high-end peptide and enzyme inhibitor pharmaceutical synthesis.
94	L-Leucine hydrochloride	760-84-9	Water-soluble leucine salt, solubility-improved raw material for peptide drugs and biological preparation development.
95	N-tert-Butylcarbamoyl-L-tert-leucine	101968-85-8	Carbamoyl protected intermediate, customized raw material for high-complexity peptide and chiral drug synthesis.
96	MOC-D-Norleucine	1261072-86-9	Chiral MOC-protected D-norleucine, exclusive raw material for high-purity chiral peptide drug preparation.
97	L-Leucine	61-90-5	Core bulk amino acid, widely used in food fortification, sports nutrition, peptide pharmaceuticals and feed additives.
98	L-β-Homoleucine hydrochloride	96386-92-4	Water-soluble homoleucine derivative, peptide intermediate for novel bioactive molecule and polypeptide drug research.
99	N-(4-Nitrophenyl)-L-Leucinamide	4178-93-2	Nitrophenyl chromogenic reagent, specific biochemical tool for protease activity detection and drug screening.
100	H-D-Leu-OBzl·TosOH	17664-93-6	Chiral benzyl protected D-leucine, high-purity modification raw material for advanced chiral peptide drug synthesis.
101	H-Nle-NH2·HCl	94787-97-0	Amidated norleucine salt, pharmaceutical intermediate for new antibacterial peptide and bioactive compound development.
102	H-Leu-PNA·HCL	16010-98-3	High-sensitivity protease detection reagent, precision laboratory material for biological analysis and peptide research.
103	H-N-Me-D-Leu-OBzl·TosOH	1208162-98-4	Chiral methylated protected intermediate, exclusive raw material for high-value chiral customized peptide synthesis.
104	L-Homoleucine	31872-98-7	Homologous leucine building block, drug modification intermediate for enzyme inhibitor and novel peptide drug preparation.

(2) CBZ-Leucine and Derivatives

105	Cbz-D-tert-Leucine	70874-05-4	Chiral protected pharmaceutical intermediate, peptide modification unit, asymmetric catalysis raw material, applied in high-end chiral drug synthesis.
106	Cbz-D-tert-Leucine·DCHA	70874-06-5	Chiral protected peptide synthesis intermediate, pharmaceutical R&D chiral raw material, biochemical reagent for high-end peptide drug manufacturing.
107	CBZ-MeLeu-OH	33099-08-0	Methylated CBZ-protected peptide intermediate, pharmaceutical R&D raw material, organic reagent for peptide drug and fine chemical synthesis.
108	Cbz-D-Leucinol	352535-09-2	Chiral alcohol pharmaceutical intermediate, optically active alcohol raw material, biochemical reagent for high-end chiral drug development.
109	Cbz-L-tert-Leucine	62965-10-0	Chiral protected pharmaceutical intermediate, peptide modification building block, asymmetric reaction ligand for high-end chiral drug synthesis.
110	N-Cbz-(D,L)-norleucine	15027-13-1	Industrial peptide raw material, general organic synthesis intermediate, conventional laboratory reagent for large-scale chemical production.
111	N-Benzyloxycarbonyl-D-Norleucine	15027-14-2	Chiral peptide synthesis intermediate, drug modification raw material, optically active reagent for high-end chiral peptide drug preparation.
112	CBZ-D-Leu-OH·DCHA	52235-17-3	Chiral active ester peptide intermediate, pharmaceutical chiral raw material, biochemical research reagent for high-end chiral peptide synthesis.
113	CBZ-D-NLE-ONP	31062-20-1	Peptide active ester intermediate, pharmaceutical R&D raw material, chromogenic reagent for peptide synthesis and biological detection.
114	CBZ-β-TBU-D-ALA-OH Dicyclohexylamine	201677-20-5	Chiral pharmaceutical synthesis intermediate, peptide modification unit, fine chemical raw material for high-end chiral drug production.
115	CBZ-Leu-NCA	125814-24-6	Amide peptide synthesis intermediate, pharmaceutical R&D raw material, organic reagent for polypeptide drug synthesis.
116	CBZ-D-Leu-OSu	65581-25-1	Chiral succinimide active ester intermediate, pharmaceutical chiral raw material, biochemical reagent for high-end chiral peptide synthesis.
117	CBZ-L-Norleucine	39608-30-5	CBZ-protected norleucine intermediate, pharmaceutical R&D raw material, biochemical reagent for peptide drug synthesis.
118	Cbz-N-Methyl-L-Norleucine	225386-32-3	Methylated CBZ-protected intermediate, pharmaceutical R&D raw material, biochemical reagent for customized peptide synthesis.
119	Cbz-D-β-Homovaline	215608-32-5	Protected β-amino acid intermediate, pharmaceutical R&D raw material, organic reagent for novel bioactive peptide development.
120	(S)-benzyl (1-Oxohexan-2-yl)carbamate	109364-33-2	Aldehyde pharmaceutical intermediate, peptide modification raw material, organic reagent for drug molecular structure optimization.
121	CBZ-L-tert-Leucine isopropylamide salt	1621085-33-3	Chiral protected peptide intermediate, pharmaceutical R&D raw material, high-precision laboratory reagent for high-end peptide drug synthesis.
122	Z-LEU-OSU	3397-35-1	Succinimide active ester intermediate, pharmaceutical R&D raw material, biochemical experimental reagent for efficient peptide coupling.
123	CBZ-Tle-OH·DCHA	62965-37-1	Chiral protected tert-leucine intermediate, pharmaceutical R&D raw material, precision reagent for high-end chiral peptide production.
124	Cbz-1-Amino-1-Cyclopentanecarboxylic acid	17191-44-5	Protected cycloleucine intermediate, pharmaceutical R&D raw material, organic reagent for antibiotic and cyclic peptide synthesis.
125	Cbz-DL-Leucinol	166735-51-9	Organic alcohol raw material, industrial peptide intermediate, laboratory reagent for bulk chemical and peptide raw material production.
126	Cbz-D-Leucine Dicyclohexylammonium Salt	7662-58-0	Chiral leucine salt intermediate, pharmaceutical chiral raw material, biochemical reagent for high-end chiral peptide drug synthesis.
127	CBZ-DL-Leu-OH	3588-60-1	Industrial grade protected leucine, organic synthesis intermediate, common laboratory reagent for industrial peptide manufacturing.
128	Cbz-L-Leucinol	6216-61-1	Chiral alcohol synthesis intermediate, peptide modification raw material, fine chemical material for high-end peptide drug development.
129	CBZ-Leu-OH	2018-66-8	Easy-to-deprotect CBZ-protected leucine, pharmaceutical R&D raw material, universal intermediate for routine peptide synthesis.
130	CBZ-D-Homoleucine	1332594-74-7	Chiral pharmaceutical R&D intermediate, protected peptide unit, biochemical reagent for high-end homopeptide and chiral drug synthesis.
131	Cbz-Leu-NH2	4801-79-0	Amidated leucine intermediate, pharmaceutical R&D raw material, organic reagent for amide-modified peptide synthesis.
132	Cbz-D-Leucine	28862-79-5	Chiral CBZ-protected D-leucine, pharmaceutical chiral raw material, biochemical reagent for high-end chiral peptide preparation.
133	Cbz-N-Methyl-D-Leucine	65635-85-0	Chiral methylated leucine intermediate, peptide modification unit, fine chemical raw material for complex chiral drug synthesis.
134	CBZ-Leu-Onp	1738-87-0	Nitrophenyl active ester intermediate, pharmaceutical R&D raw material, chromogenic reagent for peptide synthesis and biochemical detection.
135	CBZ-Leu-OH·DCHA	53363-87-4	CBZ-protected leucine salt, pharmaceutical synthesis raw material, biochemical experimental reagent for large-scale peptide production.
136	CBZ-Leu-Ome	51021-87-5	CBZ-protected methyl ester intermediate, drug modification raw material, organic coupling reagent for peptide drug synthesis.

(3) BOC-Leucine and Derivatives

137	N-(tert-butoxycarbonyl)-D-Leucinate	133467-01-3	Chiral ester intermediate for peptide synthesis, pharmaceutical R&D chiral raw material, biochemical reagent for high-end chiral peptide drug preparation.
138	Boc-L-Leucine methyl ester	63096-02-6	BOC-protected ester peptide intermediate, drug modification raw material, universal organic reagent for peptide drug synthesis.
139	(R,S)-Boc-N-Me-tBuAla-OH	1404754-06-8	Industrial organic synthesis intermediate, methylated bulk raw material, routine laboratory reagent for large-scale peptide and chemical production.
140	Boc-Leu-Osu	3392-09-4	Succinimide active ester intermediate, pharmaceutical R&D raw material, biochemical experimental reagent for efficient peptide coupling reaction.
141	Boc-Cyclolencine	35264-09-6	BOC-protected cycloleucine intermediate, pharmaceutical synthesis raw material, organic reagent for antibiotic and cyclic peptide development.
142	Boc-L-Leucine	13139-15-6	Classic BOC-protected leucine intermediate, acid cleavable protecting group, core raw material for conventional peptide drug synthesis.
143	Boc-D-tert-leucine	124655-17-0	High-value chiral protected intermediate, optically active compound building block, fine chemical raw material for high-end chiral drug synthesis.
144	Boc-D-Leu-OH·H₂O	200937-17-3	High-purity hydrated chiral peptide intermediate, pharmaceutical chiral raw material, precision biochemical reagent for chiral customized peptide production.
145	Boc-(R)-2-Aminohexan-1-OL	116640-17-6	Chiral amino alcohol intermediate, pharmaceutical R&D raw material, organic synthetic reagent for complex peptide drug modification.
146	Boc-L-Leucine p-Nitrophenylester	3350-19-4	Nitrophenyl active ester reagent, peptide synthesis intermediate, chromogenic biochemical reagent for biological detection and drug screening.
147	Boc-DL-Leu-OH·H₂O	200937-21-9	Industrial hydrated protected leucine, bulk organic intermediate, common laboratory reagent for industrial peptide manufacturing.
148	Boc-N-Me-Nle-OH	117903-25-0	Methylated BOC-protected norleucine, pharmaceutical R&D raw material, special modified intermediate for diversified peptide synthesis.
149	(S)-(-)-N-BOC-tert-Leucinol	153645-26-2	Chiral tert-leucinol derivative, asymmetric catalysis ligand, high-end fine chemical raw material for chiral drug and catalyst development.
150	Boc-L-Nle-OH	6404-28-0	BOC-protected L-norleucine intermediate, pharmaceutical synthesis raw material, basic building block for polypeptide drug preparation.
151	Boc-L-Leucinol	82010-31-9	Chiral leucinol intermediate, peptide modification raw material, fine chemical product for high-purity peptide drug synthesis.
152	BOC-NLE-OH DCHA	21947-32-0	Dicyclohexylamine salt of BOC-norleucine, stabilized peptide intermediate, biochemical reagent for large-scale peptide synthesis.
153	Boc-N-Methyl-DL-Leucine	13734-32-2	Methylated industrial intermediate, bulk chemical raw material, daily laboratory reagent for industrial fine chemical processing.
154	Boc-DL-Leucine	64727-35-1	General industrial BOC-protected leucine, cost-effective organic intermediate, widely used in mass peptide synthesis.
155	BOC-DL-TLE-OH	102185-35-3	DL-tert-leucine protected derivative, industrial fine chemical raw material, conventional reagent for chemical intermediate production.
156	Boc-L-tert-Leucine	62965-35-9	Key chiral protected intermediate, peptide modification unit, asymmetric synthesis raw material for high-end chiral drug research.
157	Boc-L-6-Hydroxynorleucine	77611-37-1	Hydroxyl-modified protected norleucine, water-soluble drug modification raw material, special intermediate for injectable peptide drugs.
158	Boc-L-β-Homoleucine	132549-43-0	Protected β-amino acid derivative, pharmaceutical R&D raw material, innovative building block for novel bioactive peptide drugs.
159	Boc-DL-Leucinol	142121-48-0	Mixed racemic amino alcohol raw material, industrial peptide auxiliary intermediate, laboratory general chemical reagent.
160	Boc-DL-Nle-OH	125342-48-5	Racemic BOC-norleucine, industrial protected raw material, supporting reagent for bulk fine chemical manufacturing.
161	Boc-Leu-N	87694-50-6	N-modified leucine intermediate, pharmaceutical R&D raw material, special structural unit for complex peptide synthesis.
162	N-Boc-D-Leucinol	106930-51-2	Chiral D-leucinol protected derivative, optically active alcohol raw material, core material for high-end chiral pharmaceutical synthesis.
163	Boc-L-Leu-Nitrile	115654-59-6	Nitrile-functionalized peptide intermediate, organic synthetic reagent, key raw material for heterocyclic drug derivation.
164	Boc-D-Nle-OH	55674-63-0	Chiral BOC-D-norleucine, drug skeleton modification raw material, optically active reagent for high-end chiral peptide preparation.
165	Boc-D-β-Leucin	183990-64-9	Chiral β-amino acid protected intermediate, pharmaceutical chiral raw material, exclusive reagent for special peptide drug synthesis.
166	Boc-L-Leucine-O Cesium Salt	42538-67-0	Metal salt active coupling reagent, high-activity peptide synthesis intermediate, efficient catalyst for fragment condensation.
167	Boc-D-Dap-OH	76387-70-7	Heterocyclic modified amino acid intermediate, diversified drug synthesis raw material, special building block for targeted peptide drugs.
168	Boc-D-Leu-OSu	60111-76-4	Chiral succinimide active ester, high-efficiency coupling intermediate, core raw material for high-purity chiral peptide synthesis.
169	Boc-DL-tert-Leucine	169870-82-0	Racemic tert-leucine protected product, industrial bulk raw material, conventional auxiliary reagent for chemical intermediate production.
170	(S)-Boc-N-Me-tBuAla-OH	287210-82-6	Single chiral methylated modified intermediate, peptide structural modification unit, high-value raw material for chiral drug customization.
171	(R)-Boc-N-Me-tBuAla-OH	287210-83-7	Optically pure chiral intermediate, asymmetric synthesis raw material, fine chemical reagent for new chiral catalyst development.
172	Boc-N-Me-D-Leu-OH	89536-84-5	Methylated chiral D-leucine derivative, peptide modification unit, high-end fine chemical for complex chiral molecule synthesis.
173	Boc-N-Methyl-D-Norleucine	161450-84-6	Chiral methylated norleucine intermediate, pharmaceutical chiral raw material, key reagent for high-value chiral peptide drug research.
174	Boc-L-Leucine hydrate	200936-87-4	Stable hydrated protected leucine, high-purity laboratory reagent, precision raw material for high-end refined peptide products.
175	Boc-N-Methyl-L-Leucine	53363-89-6	Methyl-modified BOC-leucine, diversified peptide synthesis raw material, organic reagent for modified polypeptide drug development.
176	Boc-D-tert-Leucinol	142618-92-6	Chiral D-tert-leucinol protected derivative, optically active alcohol raw material, biochemical reagent for chiral drug separation and synthesis.
177	N-tert-butoxycarbonyl-L-Leucine Amide	70533-96-9	Amidated BOC-leucine intermediate, pharmaceutical R&D raw material, key unit for amide-modified polypeptide synthesis.
178	Boc-β-t-butyl-D-Alanine	112695-98-4	Branched chiral amino acid intermediate, peptide modification building block, fine chemical raw material for high-end chiral drug manufacturing.
179	Boc-D-Leu-OH·H₂O	16937-99-8	Stable hydrated chiral protected leucine, pharmaceutical chiral raw material, biochemical experimental reagent for chiral peptide mass production.
180	N-t-BOC-Cycloleucinal	168539-99-9	Aldehyde functionalized cycloleucine intermediate, drug molecular modification raw material, organic reagent for new drug structural optimization.

(4) FMOC-Leucine and Derivatives

181	Fmoc-4,5-dehydro-D-Leucine	917099-00-4	Chiral dehydrogenated amino acid intermediate for peptide synthesis, pharmaceutical R&D chiral raw material, applied in high-end chiral peptide drug development.
182	DL-Leucine-D10-N-FMOC	126727-03-5	High-purity deuterated FMOC-protected intermediate, precision laboratory reagent and core raw material for high-end customized peptide synthesis.
183	Fmoc-5,6-Dehydrohomoleucine	1369532-04-6	Dehydrogenated homoleucine derivative, peptide synthesis building block, organic reagent for novel bioactive peptide drug research.
184	Fmoc-Nle-Osu	201026-08-6	FMOC-protected norleucine succinimide active ester, high-efficiency coupling reagent for polypeptide synthesis and pharmaceutical research.
185	FMOC-DL-ACPO(2)-OH	144701-20-2	Industrial common peptide raw material, organic synthesis intermediate, conventional laboratory reagent for mass chemical and peptide production.
186	Fmoc-α-Me-D-Leucine	1231709-23-1	α-Methyl modified chiral leucine intermediate, peptide structural modification unit, fine chemical raw material for high-end chiral drug synthesis.
187	Fmoc-L-Leucine 4-Nitrophenyl ester	71989-25-8	Nitrophenyl active ester reagent, FMOC-series peptide intermediate, chromogenic reagent for biological detection and drug screening.
188	Fmoc-Cycloleucine	117322-30-2	FMOC-protected cycloleucine, cyclic amino acid intermediate, key raw material for antibiotic and cyclic peptide drug synthesis.
189	Fmoc-L-Nle-OH	77284-32-3	Classic FMOC-protected L-norleucine, universal peptide synthesis intermediate, widely used in high-purity polypeptide preparation.
190	Fmoc-2-Me-Nle-OH	2226710-38-7	2-Methylated norleucine derivative, modified amino acid building block for diversified functional peptide drug synthesis.
191	Fmoc-D-Nle-OH	112883-41-7	Chiral FMOC-D-norleucine intermediate, optically active raw material, core component for high-end chiral peptide and targeted drug synthesis.
192	Fmoc-D-Leu-ol	215178-41-9	Chiral D-leucinol FMOC derivative, optically active alcohol raw material, biochemical reagent for chiral catalyst and pharmaceutical synthesis.
193	Fmoc-N-Me-Nle-OH	112883-42-8	N-Methyl modified FMOC-norleucine, special peptide modification unit for complex and high-value polypeptide synthesis.
194	Fmoc-β-Homo-Leu-OH	193887-44-4	FMOC-protected β-homoleucine, β-amino acid functional intermediate, innovative raw material for novel long-acting peptide drugs.
195	Fmoc-D-Leu-OH	114360-54-2	Chiral FMOC-protected D-leucine, basic raw material for solid-phase peptide synthesis, widely applied in chiral pharmaceutical R&D.
196	Fmoc-D-β-Homoleucine	212688-54-5	Chiral β-amino acid protected intermediate, high-value fine chemical, used in special structure chiral peptide drug development.
197	Fmoc-4,5-dehydro-L-Leucine	87720-55-6	L-type dehydrogenated leucine derivative, unsaturated amino acid unit, key intermediate for novel modified peptide research.
198	Fmoc-β-tBu-D-Ala-OH	359766-58-8	Branched chain chiral protected amino acid, peptide rigid modification unit, core raw material for high-stability chiral drug synthesis.
199	Fmoc-L-Leu-OH	35661-60-0	Common FMOC-protected L-leucine, base-labile protecting group, mainstream raw material for solid-phase peptide synthesis.
200	MOC-L-NLE(6-OH)-OH	374899-60-2	Hydroxyl-modified MOC-protected norleucine, water-soluble optimized intermediate for injectable and high-end peptide drug preparation.
201	Fmoc-D-Homoleucine	204320-60-5	Chiral D-homoleucine FMOC derivative, extended carbon chain amino acid unit, used in high-end customized chiral peptide synthesis.
202	Fmoc-Tle-OH	132684-60-7	FMOC-protected tert-leucine, sterically hindered chiral intermediate, asymmetric catalysis ligand and high-end chiral drug raw material.
203	Fmoc-N-Me-Leu-OH	103478-62-2	N-Methyl FMOC-leucine, methylation modified intermediate, important building block for structurally optimized peptide drugs.
204	Fmoc-N-Methyl-D-leucine	103478-63-3	Chiral N-methyl-D-leucine FMOC product, fine chemical intermediate for complex chiral molecule and targeted drug synthesis.
205	Fmoc-D-tert-Leucine	198543-64-5	High-purity chiral FMOC-D-tert-leucine, optically active synthetic raw material, exclusive reagent for high-end chiral pharmaceutical production.
206	Fmoc-α-Me-L-Leucine	312624-65-0	α-Methyl L-leucine protected derivative, peptide space structure modifier, high-value raw material for new chiral drug screening.
207	FMOC-L-ACPC	220497-66-5	Cyclopropane modified L-amino acid, special cyclic skeleton intermediate for novel constrained peptide drug development.
208	FMOC-D-ACPC	220497-67-6	Chiral cyclopropane D-amino acid intermediate, optically active cyclic unit, used in high-end chiral constrained peptide synthesis.
209	Fmoc-Nle-OPfp	121593-77-9	Pentafluorophenyl active ester of norleucine, high-activity condensation reagent, precision raw material for high-purity peptide fragment splicing.
210	Fmoc-L-Leu-ol	139551-83-0	FMOC-protected L-leucinol, chiral alcohol intermediate, fine chemical raw material for high-end biomedical and peptide derivative synthesis.
211	Fmoc-Leu-OSu	76542-83-1	FMOC-L-leucine succinimide active ester, common activated intermediate, widely used in conventional liquid and solid-phase peptide synthesis.
212	Fmoc-Leu-OPfp	86060-88-0	Pentafluorophenyl activated leucine reagent, high-stability active ester, dedicated to high-end refined peptide and difficult coupling reaction.
213	FMOC-ε-AZIDO-NLE-OH	159610-89-6	Azide functionalized norleucine intermediate, click chemistry raw material, special marker unit for modified peptide and probe drug synthesis.
214	Fmoc-HomoLeu-OH	180414-94-2	Homoleucine FMOC protected product, extended alkyl chain amino acid, diversified building block for functional peptide research.
215	Fmoc-Leu-NH2	139551-97-6	Amidated FMOC-leucine intermediate, terminal amide modified raw material, biochemical reagent for stable polypeptide drug synthesis.

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