
Chemical identity
Cefixime Methyl Ester
CAS 88621-01-6 · C17H17N5O7S2
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-09857 |
|---|---|
| PubChem CID | 9956221 |
| Name | Cefixime Methyl Ester |
| CAS RN | 88621-01-6 |
| Molecular formula | C17H17N5O7S2 |
| Molecular weight | 467.48 g/mol |
| IUPAC name | (6R,7R)-7-[[(2Z)-2-(2-Amino-4-thiazolyl)-2-[(2-methoxy-2-oxoethoxy)imino]acetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid |
| InChIKey | ZDPJGEMACCCYJO-QVJRADPESA-N |
02Structure identifiers

The parsed structure contains 3 rings, includes aromatic atoms, includes aliphatic carbon, has 2 defined stereocentres. These statements are calculated from the published structure string.
| Defined stereocentres | 2 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 3 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | COC(=O)CO/N=C(/C1=CSC(=N1)N)\C(=O)N[C@H]2[C@@H]3N(C2=O)C(=C(CS3)C=C)C(=O)O |
|---|---|
| InChI | Not listed |
| Formula from structure | C17H17N5O7S2 |
| Molecular weight from structure | 467.48 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 88621-01-6 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 88621-01-6 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
Cefixime
View API and impurity familyOther names
- Cefixime Methyl Ester
- 88621-01-6
- (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-(2-methoxy-2-oxoethoxy)iminoacetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
- Cefixime Impurity G
- Cefixime Methyl Ester Impurity
- SCHEMBL6679698
- (6R,7R)-7-((Z)-2-(2-aminothiazol-4-yl)-2-((2-methoxy-2-oxoethoxy)imino)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
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 9956221
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.
