
Chemical identity
Captopril EP Impurity B
CAS 80629-35-2 · C9H14BrNO3
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-09350 |
|---|---|
| PubChem CID | 12760206 |
| Name | Captopril EP Impurity B |
| CAS RN | 80629-35-2 |
| Molecular formula | C9H14BrNO3 |
| Molecular weight | 264.12 g/mol |
| IUPAC name | (2S)-1-[(2S)-3-bromo-2-methylpropanoyl]-pyrrolidine-2-carboxylic acid |
| InChIKey | SJYSAVFKJLHJHP-RQJHMYQMSA-N |
02Structure identifiers

The parsed structure contains 1 ring, includes aliphatic carbon, has 2 defined stereocentres, contains at least one halogen atom. These statements are calculated from the published structure string.
| Defined stereocentres | 2 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 1 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C[C@H](CBr)C(=O)N1CCC[C@H]1C(=O)O |
|---|---|
| InChI | Not listed |
| Formula from structure | C9H14BrNO3 |
| Molecular weight from structure | 264.12 g/mol |
03Stereochemistry
The published structure contains 2 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.
Published same-connectivity configurations
1 recordThese records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

No additional structure-linked configuration with the same connectivity is currently present in the LazyChem dataset.
Scope: The mathematical 2^n value is only an upper bound. Symmetry and other stereogenic elements can change the number of distinct stereoisomers. A hypothetical configuration is not published as a compound record without a verified structure identity.
04India status for this compound
These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.
| NDPS / RCS | NO EXACT MATCH FOUND | CAS 80629-35-2 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 80629-35-2 has no exact match in the reviewed SCOMET list. |
| Review date | 2026-08-01 | Recheck the current official instruments for the material, concentration, activity and date in question. |
- Narcotic Drugs and Psychotropic Substances Act, 1985, ScheduleDepartment of Revenue, Government of India · reviewed 2026-08-01
- Controlled-substances notifications and amendmentsDepartment of Revenue, Government of India · reviewed 2026-08-01
- Appendix 3, SCOMET ListDirectorate General of Foreign Trade, Government of India · reviewed 2026-08-01
05Names and relationships
Associated parent compound
Captopril
View API and impurity familyOther names
- ((S)-3-Bromo-2-methylpropanoyl)-L-proline
- Captopril bromo analog
- 80629-35-2
- Captopril Impurity B
- Captopril impurity B [EP]
- UNII-6HCR5N6952
- (2S)-1-[(2S)-3-Bromo-2-methylpropanoyl]pyrrolidine-2-carboxylic Acid
- 6HCR5N6952
- Captopril specified impurity B [EP]
- L-Proline, 1-((2S)-3-bromo-2-methyl-1-oxopropyl)-
- L-Proline, 1-(3-bromo-2-methyl-1-oxopropyl)-, (S)-
- DTXSID20230443
06Documented history
Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.
No verified discovery, first report, occurrence, use or issue event is currently available for this identity.
07Sources
- S01PubChem compound record, CID 12760206
Names and machine-readable chemical identity properties.
- S02NCBI website and molecular data policies
Reuse policy for NCBI molecular data. This page does not reproduce vendor descriptions or contributed narrative text.
- S03Narcotic Drugs and Psychotropic Substances Act, 1985, Schedule
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S04Controlled-substances notifications and amendments
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S05Appendix 3, SCOMET List
Directorate General of Foreign Trade, Government of India. Used for the exact-compound India status shown on this page.
