Impurity reference standards
Captopril impurity standards
22 characterised compounds linked to Captopril are catalogued here, from named pharmacopoeial impurities to synthesis intermediates and breakdown products. Highlights of the range are 10 pharmacopoeial impurities and 1 isotope-labelled standard.
22reference materials
10pharmacopoeial
1isotope labelled
Every standard comes with a certificate of analysis. Structure confirmation data, typically NMR, MS and chromatographic purity, is available on request. Typical uses are method development and validation, relative response factor work, forced degradation studies and the impurity sections of ANDA, DMF or CEP filings.
By impurity type
Pharmacopoeial10EP, USP, BP or JP named impurities
Isotope labelled1Deuterated, 13C or 15N internal standards
Counts are based on product names. One compound can fall into more than one type.
All Captopril reference materials
1–22 of 22 standards
(S)-S-(3-Chloro-2-methyl-3-oxopropyl) ethanethioate
- CAS
- 69570-39-4
- Formula
- C6H9ClO2S
- MW
- 180.65 g/mol
ZX-023746
1-[(2R)-3-Mercapto-2-methyl-1-oxopropyl]-D-proline
- CAS
- 112243-88-6
- Formula
- C9H15NO3S
- MW
- 217.29 g/mol
ZX-021026
Ethyl ((S)-3-mercapto-2-methylpropanoyl)-L-prolinate
- CAS
- 86938-12-7
- Formula
- C11H19NO3S
- MW
- 245.34 g/mol
ZX-036700
Questions
Captopril impurities, answered
How many Captopril impurity standards does Zemixal list?
The catalogue currently lists 22 compounds for Captopril, including 10 pharmacopoeial impurities and 1 isotope-labelled standard. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Captopril impurity standard?
A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.
Can Zemixal make a Captopril impurity that is not listed?
Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.
Are isotope-labelled Captopril standards available?
Yes. 1 stable-isotope labelled compound is listed, suitable as internal standards for LC-MS bioanalysis and trace impurity quantitation.