Carbidopa Related Compounds & Impurities

Carbidopa is a peripheral DOPA decarboxylase inhibitor combined with levodopa to increase CNS levodopa availability in Parkinson's therapy.

Simson Pharma Limited along with its subsidiary offices Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) is a trusted manufacturer and supplier of high-quality pharmaceutical reference standards, offering a comprehensive portfolio of Carbidopa reference standards, pharmacopeial and non-pharmacopeial Carbidopa impurities, related compounds, related substances, metabolites, stable isotope-labelled compounds, deuterium labelled compounds and nitrosamine (N-NO) reference standards.

These materials support pharmaceutical research and development, product development, ANDA and DMF submissions, quality control (QC), analytical method development and validation, stability studies, impurity identification, and genotoxic impurity assessment.

Our Carbidopa-related reference standards are thoroughly characterized using advanced analytical techniques and are supplied with comprehensive Certificates of Analysis (COA) and supporting analytical data from our USFDA certified, ISO 17025 and ISO 17034 accredited Lab, to meet global regulatory expectations. EP and USP traceable reference standards can also be provided upon request, subject to availability. Simson is also a provider of EP and USP traceable standards. To ensure consistent quality and reliability, our reference standards are periodically re-tested according to established quality management procedures.

Pharmaceutical Reference Standards / Impurity Standards

Carbidopa
D,L-Carbidopa
(S)-(-)-Carbidopa
3,4-dihydroxybenzaldehyde
Carbidopa Related Compound A
Carbidopa Impurity C
Carbidopa Impurity B
Carbidopa EP Impurity D
Carbidopa EP Impurity E
Carbidopa Impurity F
Carbidopa EP Impurity J
Carbidopa EP Impurity C
Carbidopa Methyl Ester
Carbidopa Ethyl Ester Hydrochloride Salt
Carbidopa Ethyl Ester
2-Bromo Carbidopa
Carbidopa Impurity 1
Cyclohexylidene Carbidopa Methyl Ester
Carbidopa EP Impurity H
Carbidopa EP Impurity I
(R)-Carbidopa
Carbidopa EP Impurity B
L-alpha-Methyl DOPA Methyl Ester Hydrochloride
3-Hydroxy-O-methyl-L-tyrosine
3,4-O,O-Dimethyl Carbidopa
Carbidopa Hydantoic Acid
2-amino-3-hydroxy-3-(4-hydroxy-3-methoxyphenyl)propanoic acid
CARBIDOPA EP IMPURITY B
6,7-dihydroxy-3-methylcinnoline
Carbidopa Impurity 2
N-nitroso Carbidopa
Carbidopa Hydrate
Carbidopa Impurity 4
Carbidopa EP Impurity I (racemic)
Carbidopa Impurity 6
4-O-Methyl Carbidopa
Carbidopa EP Impurity A
Carbidopa EP Impurity G
Carbidopa EP Impurity F&H Mixture
Carbidopa Imine Ester Impurity
Carbidopa Impurity 5
Carbidopa Ethyl Ester Hydrochloride (Racemic)
Carbidopa Impurity 3 Hydrobromide
Carbidopa Impurity 7
Carbidopa propanoic acid(E,Z Isomer)

Isotope Labelled Compounds

Carbidopa D3 Hydrate
Carbidopa D3
13C;D3 Carbidopa Trifluoroacetic acid salt Racemic mixture
Carbidopa D5