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

Carbidopa Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-(-)-Carbidopa D3 Stable Isotopes CS-O-20028 1276732-89-8 Enquire
(S)-(-)-Carbidopa-d3 Hydrate Stable Isotopes CS-O-02756 1276197-58-0 In Stock
(S)-(-)-Carbidopa-d5 Stable Isotopes CS-T-69415 1426174-03-9 Enquire
(S)-Carbidopa Methyl-d3 Ester N-cyclohexylidene Stable Isotopes CS-T-100688 Not Available Enquire
3-O-Methyl Carbidopa-d5 Stable Isotopes CS-T-81595 1794810-91-5 Enquire
Carbidopa 13C D5 Stable Isotopes CS-O-15454 302-53-4 (Unlabeled) Enquire
Carbidopa Trifluoroacetic acid salt Racemic mixture-13CD3 Stable Isotopes CS-SN-00012 Not Available Enquire
Carbidopa-d3 Hydrate Stable Isotopes CS-O-06462 38821-49-7 (Unlabeled) In Stock
Carbidopa-d5 Stable Isotopes CS-T-50253 1185134-76-2 In Stock
Foscarbidopa-d3 Stable Isotopes CS-O-59114 1907685-81-7 (Unlabeled) Enquire
R-(+)-Carbidopa-d5 Stable Isotopes CS-T-98746 Not Available Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Carbidopa API Standards CS-O-01054 28860-95-9 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-Carbidopa Methyl Ester N-Cyclohexylidene Impurities CS-T-71470 934371-48-9 Enquire
2-Bromo (S)-Carbidopa Impurities CS-T-67232 43197-33-7 Enquire
3,4-O,O-Dimethyl Carbidopa Impurities CS-O-59819 937203-35-5 Enquire
3-O-Methyl Carbidopa Impurities CS-T-58059 85933-19-3 Enquire
Carbidopa EP Impurity B Impurities CS-EO-00019 18181-08-3 Enquire
Carbidopa EP Impurity C Impurities CS-O-33871 84488-77-7 Enquire
Carbidopa EP Impurity E Impurities CS-T-50258 52514-63-3 In Stock
Carbidopa EP Impurity F Impurities CS-O-12052 1458640-32-8 Discontinued
Carbidopa EP Impurity I (Racemic) Impurities CS-T-49530 1246819-09-9 Enquire
Carbidopa EP Impurity J Impurities CS-T-49529 1246817-47-9 Enquire
Carbidopa Ethyl Ester Hydrochloride Impurities CS-P-07470 96115-88-7 Enquire
Carbidopa monohydrate Impurities CS-M-34857 38821-49-7 Enquire
DL-Carbidopa Impurities CS-T-50252 302-53-4 In Stock
Methyl 3-(3,4-dihydroxyphenyl)-2-methyl propanoate Impurities CS-O-53173 2104012-68-0 Enquire
Rac-Carbidopa EP Impurity H Impurities CS-O-38880 2470439-16-6 Enquire
rac-Carbidopa Methyl Ester Impurities CS-T-71242 91431-01-5 Enquire
rac-Carbidopa Methyl Ester methyl sulphonate salt Impurities CS-O-57702 91431-01-5 (freebase) Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Carbidopa for system suitability (Y0001713) EP Standards CS-EG-00261 38821-49-7 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Carbidopa 4-Phosphate Trihydrate Intermediates CS-T-69441 1907686-07-0 Enquire
L-Carbidopa-3’, 4’-Diphosphate Intermediates CS-T-69623 1907685-82-8 Enquire