
Chemical identity
Capecitabine impurity C
CAS not listed · C16H20FN3O7
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-37653 |
|---|---|
| PubChem CID | 75213124 |
| Name | Capecitabine impurity C |
| CAS RN | Not listed |
| Molecular formula | C16H20FN3O7 |
| Molecular weight | 385.34 g/mol |
| IUPAC name | pentyl N-[5-fluoro-1-(6-methyl-2-oxo-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-2-oxopyrimidin-4-yl]carbamate |
| InChIKey | VTAMAYSBXXKQPB-UHFFFAOYSA-N |
02Structure identifiers

The parsed structure contains 3 rings, includes aromatic atoms, includes aliphatic carbon, contains at least one halogen atom. These statements are calculated from the published structure string.
| Defined stereocentres | 0 |
|---|---|
| Unassigned stereocentres | 4 |
| Ring count | 3 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | CCCCCOC(=O)NC1=NC(=O)N(C=C1F)C2C3C(C(O2)C)OC(=O)O3 |
|---|---|
| InChI | Not listed |
| Formula from structure | C16H20FN3O7 |
| Molecular weight from structure | 385.34 g/mol |
03Stereochemistry
The published structure contains 0 defined and 4 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.
Published same-connectivity configurations
3 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.


2',3'-O-Carbonyl-5'-deoxy-5-fluoro-N4-(pentyloxycarbonyl)cytidine
CAS not listed
VTAMAYSBXXKQPB-UORFTKCHSA-N
4 defined, 0 unassigned centres
![Two-dimensional chemical structure of pentyl N-[1-[(3aS,4R,6R)-6-methyl-2-oxo-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl]-5-fluoro-2-oxopyrimidin-4-yl]carbamate](/structures/pubchem/46783603-300.png)
pentyl N-[1-[(3aS,4R,6R)-6-methyl-2-oxo-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl]-5-fluoro-2-oxopyrimidin-4-yl]carbamate
CAS not listed
VTAMAYSBXXKQPB-IZSYJUOESA-N
3 defined, 1 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 | NO EXACT MATCH FOUND | No CAS number is available for an exact comparison. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | No CAS number is available for an exact comparison. |
| 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
No parent compound is listed.
Other names
No synonyms are listed.
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 75213124
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.
