Chemical identity

Cefalexin EP Impurity E

CAS 146794-70-9 · C13H18N2O4S

01Identity

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

Lazychem IDLC-09688
PubChem CID14949331
NameCefalexin EP Impurity E
CAS RN146794-70-9
Molecular formulaC13H18N2O4S
Molecular weight298.36 g/mol
IUPAC name(6R,7R)-7-[(2,2-Dimethylpropanoyl)amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
InChIKeyJLNXDMISSHNIAD-GMSGAONNSA-N

02Structure identifiers

2D structurePubChem CID 14949331
Two-dimensional chemical structure of Cefalexin EP Impurity E, CAS 146794-70-9
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 2 rings, includes aliphatic carbon, has 2 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres2
Unassigned stereocentres0
Ring count2
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCC1=C(N2[C@@H]([C@@H](C2=O)NC(=O)C(C)(C)C)SC1)C(=O)O
InChINot listed
Formula from structureC13H18N2O4S
Molecular weight from structure298.36 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

1 record

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.

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 / RCSNO EXACT MATCH FOUNDCAS 146794-70-9 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 146794-70-9 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

Cefalexin

View API and impurity family

Other names

  • N-Pivaloyl 7-aminodesacetoxycephalosporanic acid
  • 7-ADCA Pivalamide
  • 146794-70-9
  • MDO0VUD5WQ
  • (6R,7R)-7-(2,2-dimethylpropanoylamino)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • (6R,7R)-7-(2,2-DIMETHYLPROPANAMIDO)-3-METHYL-8-OXO-5-THIA-1-AZABICYCLO[4.2.0]OCT-2-ENE-2-CARBOXYLIC ACID
  • 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((2,2-dimethyl-1-oxopropyl)amino)-3-methyl-8-oxo-, (6R,7R)-
  • 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((2,2-dimethyl-1-oxopropyl)amino)-3-methyl-8-oxo-, (6R-trans)-
  • UNII-MDO0VUD5WQ
  • (6R,7R)-7-[(2,2-dimethyl-1-oxopropyl)amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
  • Cefadroxil impurity H [EP]
  • Cefadroxil monohydrate impurity H [EP]

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