
API and parent drug
Cefixime
CAS 79350-37-1 · C16H15N5O7S2 · 18 related records
01API identity and structure

| API / medicine name | Cefixime |
|---|---|
| CAS RN | 79350-37-1 |
| PubChem CID | 5362065 |
| Molecular formula | C16H15N5O7S2 |
| Molecular weight | 453.5 g/mol |
| IUPAC name | (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-(carboxymethoxyimino)acetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid |
| Defined stereocentres | 2 |
| Unassigned stereocentres | 0 |
| SMILES | C=CC1=C(N2[C@@H]([C@@H](C2=O)NC(=O)/C(=N\OCC(=O)O)/C3=CSC(=N3)N)SC1)C(=O)O |
|---|---|
| InChI | Not listed |
| InChIKey | OKBVVJOGVLARMR-QSWIMTSFSA-N |
02Stereochemistry
The published structure contains 2 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.
Published same-connectivity configurations
4 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.


7-(2-(2-Amino-1,3-thiazol-4-yl)((carboxymethoxy)imino)acetamido)-3-ethenyl-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid
CAS Not listed
OKBVVJOGVLARMR-UHFFFAOYSA-N
0 defined, 2 unassigned centres

Cefixime EP Impurity C / Cefixime 7-Epimer
CAS 108691-83-4
OKBVVJOGVLARMR-WVIRHPHLSA-N
2 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.
03Structural nitrosamine screen
No record-level structural candidate is currently published for this identity.
This result does not predict manufacturing conditions, formation, analytical findings or absence of risk. A process-specific assessment is required.
04India status for this compound
The result below applies only to this exact compound identity and CAS number.
| NDPS / RCS | NOT FOUND IN REVIEWED ENTRIES | No exact reviewed identity entry was found. Generic, class, analogue, salt and isomer provisions were not evaluated. Confirm the current official schedule before a regulatory decision. |
|---|---|---|
| SCOMET | NOT FOUND IN REVIEWED CAS ENTRIES | CAS 79350-37-1 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
06Sources
- S01PubChem compound record, CID 5362065
Structure, identifiers and machine-readable properties for the API identity.
- S02NCBI website and molecular data policies
Reuse policy for NCBI molecular data. Vendor descriptions and contributed narrative text are not reproduced.
- S03Lazychem chemical records
Parent-family links use the supplied parent identity.
















