Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Methionine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Methionine impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Methionine-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
Our Methionine-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
Methionine Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (RS)-S-Adenosyl-L-methionine-d3 (S-methyl-d3) Tetra(p-toluen... | Stable Isotopes | CS-T-102983 | Not Available | Enquire |
| Ademethionine-d3 1,4-Butanedisulfonate (>85%) | Stable Isotopes | CS-T-103021 | 101020-79-5(Unlabelled) | Enquire |
| Decarboxylated S-Adenosylmethionine-d3 Sulfuric Acid | Stable Isotopes | CS-T-94859 | 22365-13-5 (unlabled free base) | Enquire |
| DL-Methionine D7 | Stable Isotopes | CS-O-32909 | 59-51-8 (Unlabeled | Enquire |
| DL-Methionine-d3 (S-methyl-d3) | Stable Isotopes | CS-C-00869 | 284665-20-9 | Enquire |
| D-Methionine D4 | Stable Isotopes | CS-C-00410 | 348-67-4 (Unlabeled) | Enquire |
| D-Methionine-d3 (S-methyl-d3) | Stable Isotopes | CS-C-00868 | 284665-18-5 | Enquire |
| D-Methionine-d3-N-FMOC (S-methyl-d3) | Stable Isotopes | CS-C-00183 | 112883-40-6 (Unlabeled) | Enquire |
| L-Methionine [R,S]-Sulfoximine-13C5 | Stable Isotopes | CS-T-62883 | 15985-39-4(Unlabeled) | Enquire |
| L-Methionine-[13C5] (Solution) | Stable Isotopes | CS-I-00662 | 202326-57-6 | Enquire |
| L-Methionine-13C | Stable Isotopes | CS-BE-00034 | 63-68-3 (Unlabeled) | Enquire |
| L-Methionine-13C, D1 | Stable Isotopes | CS-CH-00133 | 1217447-94-3 | Enquire |
| L-Methionine-13C, D2 | Stable Isotopes | CS-CH-00134 | 1240484-64-3 | Enquire |
| L-Methionine-13C, N-Boc | Stable Isotopes | CS-CH-00131 | 286437-20-5 | Enquire |
| L-Methionine-13C5 | Stable Isotopes | CS-T-82558 | 202326-57-6 | Enquire |
| L-Methionine-13C5,15N | Stable Isotopes | CS-BX-00255 | 202468-47-1 | Enquire |
| L-Methionine-13CD3 | Stable Isotopes | CS-BE-00072 | 63-68-3 (Unlabeled) | Enquire |
| L-Methionine-15N | Stable Isotopes | CS-CH-00135 | 82572-25-6 | Enquire |
| L-Methionine-15N, N-Fmoc | Stable Isotopes | CS-CH-00136 | 934183-50-3 | Enquire |
| L-Methionine-3,3,4,4-d4 | Stable Isotopes | CS-C-01102 | 67866-75-5 | Enquire |
| L-Methionine-D1 | Stable Isotopes | CS-CH-00138 | 74334-17-1 | Enquire |
| L-Methionine-d3 (S-methyl-d3) Methyl-d3-sulfonium Chloride H... | Stable Isotopes | CS-C-00646 | 63889-27-0(Unlabelled) | Enquire |
| L-Methionine-S-methyl Sulfonium Chloride-d6 | Stable Isotopes | CS-T-57601 | 362049-54-5 | Enquire |
| L-Methionine-S-methyl Sulfonium Chloride-d6 Hydrochloride | Stable Isotopes | CS-T-96901 | Not Available | Enquire |
| L-Selenomethionine-(methyl-13C) | Stable Isotopes | CS-BX-00430 | 1217470-45-5 | Enquire |
| Methionine sulfone- D4 | Stable Isotopes | CS-O-35513 | 820-10-0 (Unlabeled) | Enquire |
| Methionine sulfoxide- D4 | Stable Isotopes | CS-O-35514 | 62697-73-8 (Unlabeled) | Enquire |
| N-Acetyl-L-methionine-D3 | Stable Isotopes | CS-C-00345 | 65-82-7(Unlabeled) | Enquire |
| N-Boc-L-Methionine (Methyl-13C) | Stable Isotopes | CS-CH-00139 | 286460-62-6 | Enquire |
| N-Fmoc-L-Methionine-34S | Stable Isotopes | CS-P-08203 | 71989-28-1 (Unlabeled) | Enquire |
| S-(5'-Adenosyl)-L-methionine-13C5 Sulfate Salt (Synthetic)(M... | Stable Isotopes | CS-T-96655 | Not Available | Enquire |
| S-(5'-Adenosyl)-L-methionine-d3 Disulfate Salt (Synthetic)(M... | Stable Isotopes | CS-T-96656 | Not Available | Enquire |
| S-adenosyl methionine D3 | Stable Isotopes | CS-O-40391 | 68684-40-2 | Enquire |
API Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (±)-Methionine | API Standards | CS-T-32131 | 59-51-8 | In Stock |
| D-Methionine | API Standards | CS-T-57607 | 348-67-4 | Enquire |
| Methionine | API Standards | CS-O-30653 | 63-68-3 | In Stock |
| Methionine Calcium | API Standards | CS-O-51218 | 93805-84-6 | Enquire |
| Selenomethionine | API Standards | CS-T-42218 | 1464-42-2 | In Stock |
Metabolites
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| DL-Methioninehydroxyanalog calcium | Metabolites | CS-P-07240 | 4857-44-7 | In Stock |
| L-Methionine | Metabolites | CS-T-32133 | 63-68-3 | In Stock |
Impurities
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| "L-Methionine [R,S]-Sulfoximine" | Impurities | CS-T-57603 | 15985-39-4 | Enquire |
| α-hydroxy-methionine | Impurities | CS-O-14099 | 103063-66-7 | Enquire |
| Ac-DL-Met-OH | Impurities | CS-G-00018 | 1115-47-5 | In Stock |
| Decarboxylated S-Adenosylmethionine | Impurities | CS-P-08973 | 22365-13-5 | Enquire |
| Decarboxylated S-Adenosylmethionine Sulfate Salt | Impurities | CS-T-73209 | 67380-81-8 | Enquire |
| D-Methionine 1,1-Dimethylethyl Ester Hydrochloride | Impurities | CS-T-80090 | 1356447-69-2 | Enquire |
| L-Methionine [R]-Sulfoximine | Impurities | CS-T-57604 | 21752-31-8 | Enquire |
| L-Methionine [S]-Sulfoximine | Impurities | CS-T-57605 | 21752-32-9 | Enquire |
| L-Methionine Allyl Ester Tosylate | Impurities | CS-T-57597 | 142601-87-4 | Enquire |
| L-Methionine Methyl Ester Hydrochloride | Impurities | CS-T-32140 | 2491-18-1 | Enquire |
| L-Methionine Sulfone | Impurities | CS-T-81789 | 7314-32-1 | Enquire |
| L-Methionine Sulfoxide | Impurities | CS-T-57600 | 3226-65-1 | In Stock |
| L-Methionine tert-Butyl Ester Hydrochloride | Impurities | CS-T-32141 | 91183-71-0 | Enquire |
| L-Methionine-34S | Impurities | CS-T-57599 | 475-25-2 | Enquire |
| L-Methionine-S-methyl Sulfonium Chloride | Impurities | CS-T-32137 | 1115-84-0 | Enquire |
| Methionine Impurity D | Impurities | CS-O-59331 | 1879009-96-7 | Enquire |
| Methionine Impurity E | Impurities | CS-O-59333 | Not Available | Enquire |
| N-Acetyl Methionine Methyl Ester | Impurities | CS-T-00933 | 7451-74-3 | Enquire |
| N-Acetyl-Nitroso-DL-Methionine | Impurities | CS-O-39971 | Not Available | Enquire |
| N-Boc-D-methionine | Impurities | CS-T-07639 | 5241-66-7 | Enquire |
| N-Boc-L-methionine | Impurities | CS-T-07640 | 2488-15-5 | Enquire |
| Orlistat L-Methionine | Impurities | CS-T-83025 | 1356354-38-5 | Enquire |
| S-Adenosyl-L-methionine | Impurities | CS-O-30770 | 29908-03-0 | Enquire |
EP Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Methionine (M0960000) | EP Standards | CS-EG-01299 | 63-68-3 | Enquire |
Intermediates
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| ((2,6-Dichlorophenyl)sulfonyl)methionine | Intermediates | CS-ED-18486 | 1009262-71-8 | Enquire |
| ((2-Fluorophenyl)sulfonyl)methionine | Intermediates | CS-ED-19365 | 1008243-60-4 | Enquire |
| ((4-(2-Chlorophenoxy)phenyl)sulfonyl)methionine | Intermediates | CS-ED-24352 | 1009715-74-5 | Enquire |
| ((4-(2-Methoxyphenoxy)phenyl)sulfonyl)methionine | Intermediates | CS-ED-31564 | 1008965-37-4 | Enquire |
| ((4-(o-Tolyloxy)phenyl)sulfonyl)methionine | Intermediates | CS-ED-32581 | 1009755-91-2 | Enquire |
| ((4-Chloro-3-(trifluoromethyl)phenyl)sulfonyl)methionine | Intermediates | CS-ED-18484 | 1009232-49-8 | Enquire |
| (2S)-[(2'S)-Amino-(3'S)-methyl-1-pentyloxy]-3-phenylpropiony... | Intermediates | CS-ED-06547 | 1356019-46-9 | Enquire |
| Ademethionine Disulfate Tosylate | Intermediates | CS-T-47450 | 97540-22-2 | Enquire |
| Boc-DL-selenomethionine | Intermediates | CS-ED-13988 | 1219410-27-1 | Enquire |
| Boc-DL-selenomethionine | Intermediates | CS-ED-13501 | 1369532-54-6 | Enquire |
| Boc-L-beta-homomethionine | Intermediates | CS-AC-04259 | 244251-20-5 | Enquire |
| Boc-l-beta-homomethionine | Intermediates | CS-LN-01358218 | Not Available | Enquire |
| Boc-L-selenomethionine | Intermediates | CS-ED-13989 | 45172-44-9 | Enquire |
| DL-Methionine sulphoxide | Intermediates | CS-CE-00772 | 62697-73-8 | Enquire |
| D-Methionine Methyl Ester Hydrochloride | Intermediates | CS-T-57602 | 69630-60-0 | Enquire |
| L-Alanyl-L-methionine | Intermediates | CS-ED-02540 | 14486-05-6 | Enquire |
| L-beta-Homomethionine Hydrochloride | Intermediates | CS-T-79075 | 75946-25-7 | Enquire |
| L-Methionine 7-amido-4-methylcoumarin trifluoroacetate | Intermediates | CS-CE-00771 | 94367-35-8 | Enquire |
| L-Methionine ethyl ester, HCl | Intermediates | CS-T-81970 | 2899-36-7 | Enquire |
| L-Methionine N-carboxyanhydride | Intermediates | CS-DU-00118 | 15776-11-1 | Enquire |
| L-Prolyl-L-methionine | Intermediates | CS-ED-11343 | 52899-08-8 | Enquire |
| Methionine sulfoximine | Intermediates | CS-ED-08454 | 1982-67-8 | Enquire |
| N-(4-Amino-2-phenylbenzoyl)methionine methyl ester | Intermediates | CS-T-66098 | 180977-03-1 | Enquire |
| N-Acetyl-D-methionine | Intermediates | CS-AC-03608 | 1509-92-8 | Enquire |
| N-Acetyl-L-methionine | Intermediates | CS-AC-03920 | 65-82-7 | Enquire |
| N-Benzoyl-L-methionine | Intermediates | CS-ED-22730 | 10290-61-6 | Enquire |
| N-Cbz-D-methionine | Intermediates | CS-T-10679 | 28862-80-8 | Enquire |
| N-Fmoc-D-methionine | Intermediates | CS-T-24552 | 112883-40-6 | Enquire |
| N-Fmoc-L-methionine | Intermediates | CS-T-24553 | 71989-28-1 | In Stock |
| N-Formyl-L-methionine | Intermediates | CS-T-77827 | 4289-98-9 | Enquire |
| Z-L-Methionine methyl ester | Intermediates | CS-T-82224 | 56762-93-7 | Enquire |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| L-Selenomethionine | Fine Chemicals | CS-T-61267 | 3211-76-5 | In Stock |
| Zinc Monomethionine Sulfate | Fine Chemicals | CS-O-16645 | 56329-42-1 | In Stock |
Building Blocks
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Fmoc-l-beta-homomethionine | Building Blocks | CS-T-77157 | 266359-48-2 | Enquire |
| N-Cbz-L-methionine | Building Blocks | CS-T-10680 | 1152-62-1 | Enquire |
| S-Adenosyl-L-methionine 1,4-butane sulfonate | Building Blocks | CS-T-47451 | 101020-79-5 | In Stock |