Methionine Series-Nantong Dongbu Amino Ácido S.A.

The methionine product series are sulfur-containing amino acid derivatives, including natural methionine, functionalized derivatives, and CBZ/BOC/FMOC-protected amino acids. Widely applied in pharmaceutical synthesis, feed nutrition, food additives, biological reagents and other fields, they feature high physiological activity, excellent stability and high reaction selectivity as core advantages.

(1) Methionine and Derivatives

No.	Product Name	CAS No.	Product Description
1	S-Adenosyl-L-Methionine	29908-03-0	Pharmaceutical raw material and biological reagent, used for antidepressant drug synthesis, liver protection preparation research and development, and methyl donor in biochemical reactions.
2	L-Methionine p-Nitroanilide	6042-04-2	Biochemical detection reagent, used for protease activity determination and in vitro diagnostic kit raw material.
3	Adenosylmethionine 1,4-butanedisulfonate	200393-05-1	Pharmaceutical preparation raw material, used for injectable antidepressant and liver fibrosis treatment drugs.
4	H-Met-OiPr.HCl	85391-05-5	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.
5	L-Methionine Methylsulfonium Iodide	34236-06-1	Organic synthesis intermediate, used for antitumor drug research and development and nucleophilic substitution reaction reagent.
6	H-Met-Amc Acetate salt	201854-07-1	Fluorescent labeling reagent, used for fluorescent detection of protease activity and biomolecule tracing.
7	H-Met-NH2	4510-08-1	Pharmaceutical intermediate and health product raw material, used for drug synthesis and nutritional supplement formulation.
8	DL-Methionine Sulfone	820-10-0	Organic synthesis intermediate, used for drug molecular modification and fine chemical production.
9	Ademetionine	17176-17-9	Biological reagent and pharmaceutical raw material, used for biochemical research and liver disease treatment drug research and development.
10	H-Met-OMe.HCl	2491-18-1	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.
11	S-Adenosyl-L-Methionine disulfate tosylate	97540-22-2	Pharmaceutical raw material, used for oral antidepressant and neuroprotective drug preparations.
12	S-Adenosylmethione	9012-25-3	Bioenzyme preparation, used for biochemical reaction catalysis and biopharmaceutical processes.
13	L-β-HomoMet-OH·HCl	75946-25-7	Chiral pharmaceutical intermediate, used for optically pure drug synthesis and bioactive molecule research and development.
14	Seleno-DL-Methionine	2578-28-1	Health product raw material and feed additive, used for antioxidant nutritional supplementation and animal growth promoter.
15	L-Methionine Sulfone	7314-32-1	Organic synthesis intermediate, used for drug synthesis and polymer material modification.
16	H-Met-Oet.HCl	2899-36-7	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.
17	H-DL-Met-OMe.HCl	16118-36-8	Organic synthesis intermediate, used for general drug synthesis and fine chemical production.
18	N-Acetyl-L-Methioninamide	23361-37-7	Pharmaceutical intermediate, used for drug synthesis and bioactive molecule modification.
19	L-Methioninol	2899-37-8	Organic synthesis intermediate and cosmetic raw material, used for drug synthesis and skin care product formulation.
20	N-Benzoyl-DL-Methionine	4703-38-2	Pharmaceutical intermediate, used for drug synthesis and organic reaction reagent.
21	L-Methionine Sulfoximine	15985-39-4	Biochemical reagent and pharmaceutical intermediate, used for enzyme inhibitor research and development and biochemical detection.
22	S-Methylmethionine	4727-40-6	Food additive and health product raw material, used for flavor enhancer and nutritional supplement.
23	DL-Methionine Sulfoxide	454-41-1	Organic synthesis intermediate, used for drug molecular modification and fine chemical production.
24	DL-Selenomethionine	1464-42-2	Feed additive and health product raw material, used for antioxidation and immune regulation.
25	H-D-MET-OETHCl	7512-43-8	Chiral pharmaceutical intermediate, used for optically pure drug synthesis.
26	α-HydroxyMethionine CalciuM	4857-44-7	Feed additive, used for methionine supplementation and growth performance improvement of ruminants.
27	D-Methioninol	87206-44-8	Chiral organic intermediate, used for optically pure drug synthesis and fine chemical research and development.
28	Sodium dodecyl Sulfate	12768-45-5	Pharmaceutical raw material, used for antidepressant and liver protection drug preparations.
29	N-Acetyl-DL-Methionine	1115-47-5	Food additive and cosmetic raw material, used for functional beverages and skin care product moisturizing formulations.
30	Poly-L-Methionine	26062-47-5	Polymer material raw material, used for biomedical materials and drug carriers.
31	Methyl methioninate	21691-49-6	Chiral pharmaceutical intermediate, used for optically pure drug synthesis.
32	Formyl-D-Methionine	44978-50-9	Pharmaceutical intermediate, used for drug synthesis and organic reaction reagent.
33	DL-Methionine	59-51-8	Feed additive and food nutrition fortifier, used for animal growth promotion and human essential amino acid supplementation.
34	COBALT ACETYLMETHIONATE	105883-52-1	Catalyst and feed additive, used for organic reaction catalysis and animal nutrition enhancement.
35	H-DL-Met-Oet.HCl	6297-53-6	Organic synthesis intermediate, used for general drug synthesis and fine chemical production.
36	D-Methionine Sulfoxide	21056-56-4	Chiral organic intermediate, used for optically pure drug synthesis and bioactive molecule research and development.
37	H-DL-MET-BETANA HCL	97405-58-8	Biochemical detection reagent, used for protease activity determination.
38	DL-METHIONINE SULFOXIDE	4241-59-2	Organic synthesis intermediate, used for drug molecular modification and fine chemical production.
39	H-D-Met-OMe.HCl	69630-60-0	Chiral pharmaceutical intermediate, used for optically pure drug synthesis.
40	BZL-MET-OME HCL	402929-60-6	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.
41	H-Met(O)-OH	3226-65-1	Organic synthesis intermediate, used for drug synthesis and bioactive molecule modification.
42	D-Methionine	348-67-4	Chiral pharmaceutical intermediate and health product raw material, used for optically pure drug synthesis and nutritional supplements.
43	L-Methionine	63-68-3	Core feed additive and food nutrition fortifier, used for animal growth promotion and human essential amino acid supplementation.
44	H-Met-OtBu.HCl	91183-71-0	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.
45	N-Benzoyl-L-Methionine Amide	52811-71-9	Pharmaceutical intermediate, used for drug synthesis and bioactive molecule research and development.
46	N-Methyl-L-Methionine	42537-72-4	Pharmaceutical intermediate, used for nervous system drug research and development and bioactive molecule modification.
47	bis(DL-Methioninato-N,O)copper	15170-74-8	Feed additive and fungicide, used for animal copper nutrition supplementation and agricultural sterilization.
48	L-Seleno-Methionine	3211-76-5	Health product raw material and feed additive, used for antioxidation and immune regulation.
49	Ademetionine 1,4-butanedisulfonate	101020-79-5	Pharmaceutical preparation raw material, used for injectable liver protection and antidepressant drugs.
50	S-Adenosyl-L-Methioninetosylate	71914-80-2	Pharmaceutical raw material, used for oral antidepressant and neuroprotective drugs.
51	S-Adenosylmethionine	485-80-3	Biological reagent and pharmaceutical raw material, used for biochemical research and drug development.
52	N-FORMYL-L-METHIONINE	4309-82-4	Pharmaceutical intermediate, used for drug synthesis and organic reaction reagent.
53	N-Acetyl-L-Methionine	65-82-7	Food additive and cosmetic raw material, used for functional beverages and skin care product moisturizing formulations.
54	DL-Methioninol	502-83-0	Organic synthesis intermediate, used for drug synthesis and fine chemical production.
55	N-Acetyl-L-Methionine methylester	35671-83-1	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.
56	L-Methionine-S-methyl Sulfonium Chloride	1115-84-0	Food additive and health product raw material, used for flavor enhancer and nutritional supplement.
57	Methionine Sulfone	1118-85-0	Organic synthesis intermediate, used for drug molecular modification and fine chemical production.
58	H-Met-OBn*TsOH	68739-90-2	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.
59	H-D-MET(O2)-OH	41486-92-4	Chiral organic intermediate, used for optically pure drug synthesis and bioactive molecule research and development.
60	L-Methioninamide hydrochloride	16120-92-6	Pharmaceutical intermediate, used for drug synthesis and bioactive molecule modification.
61	N-Acetyl-D-Methionine	1509-92-8	Chiral pharmaceutical intermediate and cosmetic raw material, used for optically pure drug synthesis and skin care product formulation.
62	N-Formyl-L-Methionine	4289-98-9	Pharmaceutical intermediate, used for drug synthesis and organic reaction reagent.
63	bis(L-Methioninato-N,O)copper	10388-47-9	Feed additive and fungicide, used for animal copper nutrition supplementation and agricultural sterilization.
64	D-Methionine Sulfone hydrochloride	126124-55-4	Chiral pharmaceutical intermediate, used for optically pure drug synthesis.
65	DL-Methionine Calcium	4857-45-8	Feed additive and health product raw material, used for animal calcium nutrition supplementation and human calcium supplement preparations.
66	L-Methionine Magnesium	18962-63-5	Health product raw material and feed additive, used for magnesium supplementation and animal growth performance improvement.
67	DL-Methionine Iron	15389-90-5	Feed additive and food nutrition fortifier, used for iron supplementation.
68	N-Propionyl-L-Methionine	14246-07-0	Pharmaceutical intermediate and cosmetic raw material, used for drug molecular modification and skin care product formulation.
69	Methionine Sulfoximine	7334-32-7	Biochemical reagent and pharmaceutical intermediate, used for enzyme inhibitor research and development and biochemical detection.
70	L-Methionine-15N	3946-32-1	Isotope-labeled reagent, used for biomedical imaging and drug metabolism research.
71	D-Methionine-13C	102676-43-5	Isotope-labeled reagent, used for drug research and development and biochemical detection.
72	L-Methionine Hydroxy Analogue	583-91-5	Feed additive, used as methionine substitute with good palatability.
73	DL-Methionine Sulfone Imine	16115-80-3	Biochemical reagent and pharmaceutical intermediate, used for enzymology research and antitumor drug research and development.
74	N-Butyryl-L-Methionine	14246-08-1	Pharmaceutical intermediate and cosmetic raw material, used for drug molecular modification and skin care product formulation.
75	L-Methionine Glycidyl Ester	102388-61-4	Organic synthesis intermediate, used for drug molecular modification and polymer material synthesis.

(2) CBZ-Methionine and Derivatives

No.	Product Name	CAS No.	Product Description
76	CBZ-Met-Osu	3392-01-6	Organic synthesis coupling reagent, used for drug molecular coupling and modification.
77	Cbz-DL-Methionine	4434-61-1	Organic synthesis protecting agent and pharmaceutical intermediate, used for drug synthesis and molecular modification.
78	Cbz-L-Methionine	1152-62-1	Core protected amino acid, used for drug synthesis and organic reaction protection.
79	Cbz-D-Methionine	28862-80-8	Chiral protected amino acid, used for optically pure drug synthesis and molecular protection.
80	Cbz-L-Met-Ome	56762-93-7	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.
81	Cbz-D-Methionine Methyl Ester	126124-56-5	Chiral pharmaceutical intermediate, used for optically pure drug synthesis.
82	Cbz-L-Methionine Ethyl Ester	66684-43-3	Organic synthesis intermediate, used for drug synthesis and fine chemical production.
83	Cbz-L-Methionine Sulfoxide	34805-20-4	Protected amino acid intermediate, used for drug synthesis and molecular modification.
84	Cbz-D-Methionine Sulfoxide	126124-57-6	Chiral protected amino acid, used for optically pure drug synthesis.
85	Cbz-L-Methioninamide	34805-22-6	Pharmaceutical intermediate, used for drug synthesis and bioactive molecule research and development.

(3) BOC-Methionine and Derivatives

No.	Product Name	CAS No.	Product Description
86	Boc-DL-Met-OH	93000-03-4	Organic synthesis protecting agent and pharmaceutical intermediate, used for general drug synthesis and molecular modification.
87	Boc-D-Met-NH2	197893-07-5	Chiral protected amino acid, used for optically pure drug synthesis and molecular protection.
88	Boc-Met-OH	2488-15-5	Core protected amino acid, used for drug synthesis and organic reaction protection.
89	Boc-Met-ONP	2488-18-8	Organic synthesis coupling reagent, used for drug molecular coupling and modification.
90	Boc-β-HomoMet-OH	244251-20-5	Pharmaceutical intermediate, used for drug synthesis and molecular modification.
91	Boc-L-Methionin Sulfoxid	34805-21-5	Protected amino acid intermediate, used for drug synthesis and molecular modification.
92	Boc-L-Met-NH2	34805-23-7	Pharmaceutical intermediate, used for drug synthesis and bioactive molecule research and development.
93	Boc-Met-OH.DCHA	22823-50-3	Pharmaceutical intermediate, used for drug synthesis and organic reactions with strong stability.
94	Boc-Met(O2)-OH	60280-45-7	Protected amino acid intermediate, used for drug synthesis and molecular modification.
95	Boc-Met-OSu	3845-64-5	Organic synthesis coupling reagent, used for drug molecular coupling and modification.
96	Boc-D-Methioninesulfoxide	81444-65-7	Chiral protected amino acid, used for optically pure drug synthesis.
97	Boc-D-Methionine	5241-66-7	Chiral protected amino acid, used for optically pure drug synthesis and molecular protection.
98	Boc-L-Methionine	51372-93-1	Organic synthesis intermediate, used for drug synthesis and fine chemical production.
99	Boc-D-Met-OSu	26060-98-0	Chiral coupling reagent, used for optically pure drug molecular coupling and modification.
100	Boc-D-Methionine Methyl Ester	126124-58-7	Chiral pharmaceutical intermediate, used for optically pure drug synthesis.
101	Boc-L-Methionine Benzyl Ester	68739-91-3	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.

(4) FMOC-Methionine and Derivatives

No.	Product Name	CAS No.	Product Description
102	Fmoc-D-Met-OPFP	210473-10-2	Chiral coupling reagent, used for optically pure drug molecular coupling and modification.
103	Fmoc-N-Me-L-Met-OH	84000-12-4	Protected amino acid, used for drug synthesis and molecular protection.
104	Fmoc-Met(O2)-OH	16347-14-7	Protected amino acid intermediate, used for drug synthesis and molecular modification.
105	Fmoc-DL-Methionine	144701-23-5	Organic synthesis protecting agent and pharmaceutical intermediate, used for general drug synthesis and molecular modification.
106	Fmoc-D-Met(O2)-OH	1247791-23-6	Chiral protected amino acid, used for optically pure drug synthesis.
107	Fmoc-Met-OH	71989-28-1	Core protected amino acid, used for drug synthesis and organic reaction protection.
108	Fmoc-Methionine-ONP	71989-29-2	Organic synthesis coupling reagent, used for drug molecular coupling and modification.
109	FMOC-L-Methioninate methyl	500872-34-4	Pharmaceutical intermediate, used for drug molecular modification and organic synthesis reactions.
110	Fmoc-D-Met-OH	112883-40-6	Chiral protected amino acid, used for optically pure drug synthesis and molecular protection.
111	Fmoc-L-β-Homomethionine	266359-48-2	Pharmaceutical intermediate, used for drug synthesis and molecular modification.
112	Fmoc-SeMet-OH	1217852-49-7	Protected amino acid, used for selenium-containing drug synthesis and bioactive molecule research and development.
113	Fmoc-Met-Osu	112913-64-1	Organic synthesis coupling reagent, used for drug molecular coupling and modification.
114	Fmoc-L-Methionine Sulfde	76265-70-8	Protected amino acid intermediate, used for drug synthesis and molecular modification.
115	Fmoc-Met-Opfp	86060-94-8	Organic synthesis coupling reagent, used for drug molecular coupling and modification.
116	Fmoc-Met(O)-Ome	1219450-94-8	Protected amino acid intermediate, used for drug synthesis and molecular modification.
117	Fmoc-D-Methionine Methyl Ester	126124-59-8	Chiral pharmaceutical intermediate, used for optically pure drug synthesis.
118	Fmoc-L-Methioninamide	132388-69-3	Pharmaceutical intermediate, used for drug synthesis and bioactive molecule research and development.
119	Fmoc-D-Methionine Sulfoxide	126124-60-1	Chiral protected amino acid, used for optically pure drug synthesis.

Methionine Series

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