Chemical identity

Ceftazidime EP Impurity A/ Ceftazidime delta-3-Isomer/ Δ-2-ceftazidime

CAS 1000980-60-8 · C22H22N6O7S2

01Identity

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

Lazychem IDLC-10083
PubChem CID23659635
NameCeftazidime EP Impurity A/ Ceftazidime delta-3-Isomer/ Δ-2-ceftazidime
CAS RN1000980-60-8
Molecular formulaC22H22N6O7S2
Molecular weight546.57 g/mol
IUPAC name(2RS,6R,7R)-7-[[(2Z)-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-3-ene-2-carboxylate
InChIKeyLRKHKETXQNDOKF-YTAHGSIGSA-N

02Structure identifiers

2D structurePubChem CID 23659635
Two-dimensional chemical structure of Ceftazidime EP Impurity A/ Ceftazidime delta-3-Isomer/ Δ-2-ceftazidime, CAS 1000980-60-8
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, has 2 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres2
Unassigned stereocentres1
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 structure546.57 g/mol

03Stereochemistry

The published structure contains 2 defined and 1 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres2Structure assigned
Unassigned centres1Structure unspecified
Assignment statusPartially assignedExact published identity
Tetrahedral upper bound≤ 8Before 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 1000980-60-8 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 1000980-60-8 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

Ceftazidime

View API and impurity family

Other names

  • Ceftazidime EP Impurity A
  • Ceftazidime delta-3-isomer
  • 1-[[(6R,7R)-7-[[(2Z)-2-(2-Amino-4-thiazolyl)-2-[(1-carboxy-1-methylethoxy)imino]acetyl]amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-en-3-yl]methyl]pyridinium
  • delta-2-Ceftazidime
  • 1000980-60-8
  • UNII-97OBN5O836
  • 97OBN5O836
  • DTXSID60142935
  • CEFTAZIDIME IMPURITY A [EP IMPURITY]
  • CEFTAZIDIME DELTA-3-ISOMER [USP-RS]
  • CEFTAZIDIME PENTAHYDRATE IMPURITY A [EP IMPURITY]
  • (2RS,6R,7R)-7-(((2Z)-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-3-ENE-2-CARBOXYLATE

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