
Chemical identity
Colchicine EP Impurity C
CAS 6901-13-9 · C22H25NO6
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-31620 |
|---|---|
| PubChem CID | 244898 |
| Name | Colchicine EP Impurity C |
| CAS RN | 6901-13-9 |
| Molecular formula | C22H25NO6 |
| Molecular weight | 399.44 g/mol |
| IUPAC name | N-[(7S, 7bR, 10aS)-5, 6, 7, 7b, 8, 10a-Hexahydro-1, 2, 3, 9-tetramethoxy-8-oxobenzo[a]cyclopenta[3, 4]cyclobuta[1, 2-c]cyclohepten-7-yl]acetamide |
| InChIKey | VKPVZFOUXUQJMW-FHSNZYRGSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C22H25NO6 |
|---|---|
| InChIKey | VKPVZFOUXUQJMW-FHSNZYRGSA-N |
| Ring count | 4 |
| Defined stereocentres | 3 |
| Unassigned stereocentres | 0 |
| SMILES | CC(=O)N[C@H]1CCC2=CC(=C(C(=C2C3=C1[C@H]4[C@@H]3C=C(C4=O)OC)OC)OC)OC |
|---|---|
| InChI | InChI=1S/C22H25NO6/c1-10(24)23-13-7-6-11-8-15(27-3)21(28-4)22(29-5)16(11)17-12-9-14(26-2)20(25)18(12)19(13)17/h8-9,12-13,18H,6-7H2,1-5H3,(H,23,24)/t12-,13+,18-/m1/s1 |
03Stereochemistry
The published structure contains 3 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.
Published same-connectivity configurations
2 recordsThese records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

![2D structure: N-[(7S,7bS,10aR)-5,6,7,7b,8,10a-Hexahydro-1,2,3,9-tetramethoxy-8-oxobenzo[a]cyclopenta[3,4]cyclobuta[1,2-c]cyclohepten-7-yl]acetamide](/structures/pubchem/6713941/no-cas-n-7s-7bs-10ar-5-6-7-7b-8-10a-hexahydro-1-2-3-9-tetramethoxy-8-oxobenzo-a-cyclopenta-3-4-cy-2d-structure-300.png)
N-[(7S,7bS,10aR)-5,6,7,7b,8,10a-Hexahydro-1,2,3,9-tetramethoxy-8-oxobenzo[a]cyclopenta[3,4]cyclobuta[1,2-c]cyclohepten-7-yl]acetamide
CAS Not listed
VKPVZFOUXUQJMW-LXIYXOSZSA-N
3 defined, 0 unassigned centres
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 | NOT FOUND IN REVIEWED ENTRIES | CAS 6901-13-9 was not found in the reviewed exact-identity entries. Generic, class, analogue, salt and isomer provisions were not evaluated. |
|---|---|---|
| SCOMET | NOT FOUND IN REVIEWED CAS ENTRIES | CAS 6901-13-9 was not found in the reviewed exact-CAS mapping. Generic and analogue entries were not evaluated. |
- Narcotic Drugs and Psychotropic Substances Act, 1985, ScheduleDepartment of Revenue, Government of India · source version 1985-09-16
- Controlled-substances notifications and amendmentsDepartment of Revenue, Government of India · source version 2026-03-11
- Appendix 3, SCOMET ListDirectorate General of Foreign Trade, Government of India · source version 2024-09-02
05Names and relationships
Associated parent compound
Colchicine
View API and impurity familyOther names
- β-Lumicolchicine
- N-[(10S,12R,16S)-3,4,5,14-tetramethoxy-13-oxo-10-tetracyclo[9.5.0.02,7.012,16]hexadeca-1(11),2,4,6,14-pentaenyl]acetamide
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 244898
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.
