Chemical identity
Pyrindan
CAS 533-37-9 · C8H9N
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-10020 |
|---|---|
| PubChem CID | 68292 |
| Name | Pyrindan |
| CAS RN | 533-37-9 |
| Molecular formula | C8H9N |
| Molecular weight | 119.17 g/mol |
| IUPAC name | 6,7-dihydro-5H-cyclopenta[b]pyridine |
| InChIKey | KRNSYSYRLQDHDK-UHFFFAOYSA-N |
02Structure identifiers

The parsed structure contains 2 rings, includes aromatic atoms, includes aliphatic carbon. These statements are calculated from the published structure string.
| Defined stereocentres | 0 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 2 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C1CC2=C(C1)N=CC=C2 |
|---|---|
| InChI | Not listed |
| Formula from structure | C8H9N |
| Molecular weight from structure | 119.17 g/mol |
03India 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 533-37-9 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 533-37-9 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
04Names and relationships
Associated parent compound
Cefpirome
View API and impurity familyOther names
- Cefpirome Impurity 5
- Pyrindan
- 2,3-Cyclopentenopyridine
- 533-37-9
- 6,7-Dihydro-5H-cyclopenta[b]pyridine
- 5H-1-Pyrindine, 6,7-dihydro-
- 5H-cyclopenta[b]pyridine, 6,7-dihydro-
- 6,7-dihydro-5H-[1]pyrindine
- EINECS 208-564-1
- 18Z19A103W
- DTXSID70201446
- 6,7-DIHYDRO-5H-PYRINDINE
05Documented 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.
06Sources
- S01PubChem compound record, CID 68292
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.
