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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for L-methionine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our L-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 L-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.

L-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
L-Methionine Sulfone-d3 Stable Isotopes CS-T-96900 Not Available Enquire
L-Methionine Sulfoxide,13C Stable Isotopes CS-T-102916 3226-65-1(Unlabelled) Enquire
L-Methionine-[13C5] (Solution) Stable Isotopes CS-I-00662 202326-57-6 Enquire
L-Methionine-S-methyl Sulfonium Chloride-d6 Hydrochloride Stable Isotopes CS-T-96901 Not Available 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
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
L-Methionine [R,S]-Sulfoximine-13C5 Stable Isotopes CS-T-62883 15985-39-4(Unlabeled) Enquire
L-Methionine-13C Stable Isotopes CS-BE-00034 63-68-3 (Unlabeled) Enquire
L-Methionine-13C5 Stable Isotopes CS-T-82558 202326-57-6 Enquire
L-Methionine-S-methyl Sulfonium Chloride-d6 Stable Isotopes CS-T-57601 362049-54-5 Enquire
N-Fmoc-L-Methionine-34S Stable Isotopes CS-P-08203 71989-28-1 (Unlabeled) Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
DL-Methioninehydroxyanalog calcium Metabolite CS-P-07240 4857-44-7 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Methionine Sulfoxide Impurity CS-T-57600 3226-65-1 In Stock
S-Adenosyl-L-methionine Impurity CS-O-30770 29908-03-0 Enquire
L-Methionine [R,S]-Sulfoximine Impurity CS-T-57603 15985-39-4 Enquire
L-Methionine [R]-Sulfoximine Impurity CS-T-57604 21752-31-8 Enquire
L-Methionine [S]-Sulfoximine Impurity CS-T-57605 21752-32-9 Enquire
L-Methionine Allyl Ester Tosylate Impurity CS-T-57597 142601-87-4 Enquire
L-Methionine Methyl Ester Hydrochloride Impurity CS-T-32140 2491-18-1 Enquire
L-Methionine Sulfone Impurity CS-T-81789 7314-32-1 Enquire
L-Methionine tert-Butyl Ester Hydrochloride Impurity CS-T-32141 91183-71-0 Enquire
L-Methionine-34S Impurity CS-T-57599 475-25-2 Enquire
L-Methionine-S-methyl Sulfonium Chloride Impurity CS-T-32137 1115-84-0 Enquire
N-Boc-L-methionine Impurity CS-T-07640 2488-15-5 Enquire
Orlistat L-Methionine Impurity CS-T-83025 1356354-38-5 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Fmoc-L-methionine Intermediate CS-T-24553 71989-28-1 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
DL-Methionine Sulfone Fine Chemicals CS-O-54646 820-10-0 Enquire
L-Methionine Fine Chemicals CS-T-32133 63-68-3 In Stock


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Acetyl-Nitroso-DL-Methionine Nitrosamine CS-O-39971 Not Available Enquire


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Methionine Secondary Standards CS-SS-24260-1GM 63-68-3 Enquire
N-Acetyl-D,L-Methionine Secondary Standards CS-SS-25445-200MG 1115-47-5 Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(RS)-S-Adenosyl-L-methionine-d3 (S-methyl-d3 ) Tetra(p-tolue... Stable Isotope Reagent CS-C-01657 Not Available Enquire
L-Methionine-d3 (S-methyl-d3) Methyl-d3-sulfonium Chloride H... Stable Isotope Reagent CS-C-00646 63889-27-0(Unlabelled) Enquire
DL-Methionine-2-d1 Stable Isotope Reagent CS-C-00545 67866-74-4 Enquire
L-Methionine D3 Stable Isotope Reagent CS-T-57598 13010-53-2 Enquire
L-Methionine-13C, D1 Stable Isotope Reagent CS-CH-00133 1217447-94-3 Enquire
L-Methionine-13C, D2 Stable Isotope Reagent CS-CH-00134 1240484-64-3 Enquire
L-Methionine-13C, N-Boc Stable Isotope Reagent CS-CH-00131 286437-20-5 Enquire
L-Methionine-13C5,15N Stable Isotope Reagent CS-BX-00255 202468-47-1 Enquire
L-Methionine-13CD3 Stable Isotope Reagent CS-BE-00072 63-68-3 (Unlabeled) Enquire
L-Methionine-15N Stable Isotope Reagent CS-CH-00135 82572-25-6 Enquire
L-Methionine-15N, N-Fmoc Stable Isotope Reagent CS-CH-00136 934183-50-3 Enquire
L-Methionine-3,3,4,4-d4 Stable Isotope Reagent CS-C-01102 67866-75-5 Enquire
L-Methionine-D1 Stable Isotope Reagent CS-CH-00138 74334-17-1 Enquire
L-Methionine-d3-N-FMOC (S-methyl-d3) Stable Isotope Reagent CS-C-01133 502692-58-2 Enquire
N-Acetyl-L-methionine-D3 Stable Isotope Reagent CS-C-00345 65-82-7(Unlabeled) Enquire
N-Boc-L-Methionine (Methyl-13C) Stable Isotope Reagent CS-CH-00139 286460-62-6 Enquire


Biochemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Methionine for cell culture, 99%, Endotoxin (BET) 0.05EU/m... Biochemicals CS-SR-00522 63-68-3 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
S-Adenosyl-L-methionine 1,4-butane sulfonate Building Blocks CS-T-47451 101020-79-5 In Stock
N-Cbz-L-methionine Building Blocks CS-T-10680 1152-62-1 Enquire