Chemical identity

Ceftriaxone EP Impurity B/ Cefotaxime EP Impurity E/ Cefotaxime Related Compound E/ Deacetylcefotaxime Lactone/ 3-Desacetyl Cefotaxime Lactone

CAS 66340-33-8 · C14H13N5O5S2

01Identity

Identifiers and names for this exact compound. Empty fields are left unassigned.

Lazychem IDLC-10177
PubChem CID57218105
NameCeftriaxone EP Impurity B/ Cefotaxime EP Impurity E/ Cefotaxime Related Compound E/ Deacetylcefotaxime Lactone/ 3-Desacetyl Cefotaxime Lactone
CAS RN66340-33-8
Molecular formulaC14H13N5O5S2
Molecular weight395.41 g/mol
IUPAC name(5aR,6R)-6-[[(2Z)-(2-Aminothiazol-4-yl)(methoxyimino)acetyl]amino]-5a,6-dihydro-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazine-1,7(4H)-dione
InChIKeyMCSWUKXFFGUOQE-UHFFFAOYSA-N

02Structure identifiers

2D structurePubChem CID 57218105
Two-dimensional chemical structure of Ceftriaxone EP Impurity B/ Cefotaxime EP Impurity E/ Cefotaxime Related Compound E/ Deacetylcefotaxime Lactone/ 3-Desacetyl Cefotaxime Lactone, CAS 66340-33-8
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 4 rings, includes aromatic atoms, includes aliphatic carbon. These statements are calculated from the published structure string.

Defined stereocentres0
Unassigned stereocentres2
Ring count4
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCON=C(C1=CSC(=N1)N)C(=O)NC2C3N(C2=O)C4=C(COC4=O)CS3
InChINot listed
Formula from structureC14H13N5O5S2
Molecular weight from structure395.41 g/mol

03Stereochemistry

The published structure contains 0 defined and 2 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres0Structure assigned
Unassigned centres2Structure unspecified
Assignment statusUnassignedExact published identity
Tetrahedral upper bound≤ 4Before symmetry reduction

Published same-connectivity configurations

2 records

These records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

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 / RCSNO EXACT MATCH FOUNDCAS 66340-33-8 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 66340-33-8 has no exact match in the reviewed SCOMET list.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

05Names and relationships

Associated parent compound

Ceftriaxone; Cefotaxime

View API and impurity family

Other names

  • Cefotaxime Related Compound E (1097953)
  • Ceftriaxone EP Impurity B
  • Cefotaxime EP Impurity E/ Cefotaxime Related Compound E/ Deacetylcefotaxime Lactone/ 3-Desacetyl Cefotaxime Lactone

Related records from the same parent family

06Documented history

Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.

No dated history available

No verified discovery, first report, occurrence, use or issue event is currently available for this identity.

07Sources