Chemical identity

Ceftazidime EP Impurity B / Ceftazidime (2E)-Isomer

CAS 97148-38-4 · C22H22N6O7S2

01Identity

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

Lazychem IDLC-10084
PubChem CID5484131
NameCeftazidime EP Impurity B / Ceftazidime (2E)-Isomer
CAS RN97148-38-4
Molecular formulaC22H22N6O7S2
Molecular weight546.6 g/mol
IUPAC name(6R,7R)-7-[[(2E)-2-(2-Aminothiazol-4-yl)-2-[(1-carboxy-1-methylethoxy)imino]acetyl]amino]-8-oxo-3-[(pyridin-1-ium-1-yl)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
InChIKeyORFOPKXBNMVMKC-KZBLUZIOSA-N

02Structure identifiers

2D structurePubChem CID 5484131
Two-dimensional chemical structure of Ceftazidime EP Impurity B / Ceftazidime (2E)-Isomer, CAS 97148-38-4
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, has 2 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres2
Unassigned stereocentres0
Ring count4
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCC(C)(C(=O)O)O/N=C(\C1=CSC(=N1)N)/C(=O)N[C@H]2[C@@H]3N(C2=O)C(=C(CS3)C[N+]4=CC=CC=C4)C(=O)[O-]
InChINot listed
Formula from structureC22H22N6O7S2
Molecular weight from structure546.6 g/mol

03Stereochemistry

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

Defined centres2Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact 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 97148-38-4 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 97148-38-4 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

Ceftazidime

View API and impurity family

Other names

  • Ceftazidime EP Impurity B
  • Ceftazidime (2E)-Isomer

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