Chemical identity

Norfloxacin EP Impurity B / Norfloxacin Desethylene Impurity / Norfloxacin Ethylenediamine Analog ( Free Base)

CAS 75001-77-3 · C14H16FN3O3

01Identity

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

Lazychem IDLC-23718
PubChem CID12733924
NameNorfloxacin EP Impurity B / Norfloxacin Desethylene Impurity / Norfloxacin Ethylenediamine Analog ( Free Base)
CAS RN75001-77-3
Molecular formulaC14H16FN3O3
Molecular weight293.30 g/mol
IUPAC name7-((2-aminoethyl)amino)-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
InChIKeyLPCBOASHZANLJB-UHFFFAOYSA-N

02Structure identifiers

2D structurePubChem CID 12733924
Two-dimensional chemical structure of Norfloxacin EP Impurity B / Norfloxacin Desethylene Impurity / Norfloxacin Ethylenediamine Analog ( Free Base), CAS 75001-77-3
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 2 rings, includes aromatic atoms, includes aliphatic carbon, contains at least one halogen atom. These statements are calculated from the published structure string.

Defined stereocentres0
Unassigned stereocentres0
Ring count2
Secondary amines1
Tertiary amines0
N-methyl amine sites0
SMILESCCN1C=C(C(=O)C2=CC(=C(C=C21)NCCN)F)C(=O)O
InChINot listed
Formula from structureC14H16FN3O3
Molecular weight from structure293.30 g/mol

03Possible N-nitroso structures

Shown for structural screening only. These candidates are not confirmed impurities, formation predictions or analytical findings.

Matched amine site1 candidate
Chemical structure of Norfloxacin EP Impurity B / Norfloxacin Desethylene Impurity / Norfloxacin Ethylenediamine Analog ( Free Base) with the matched amine site highlighted in amber
Amber identifies the screened atom and adjacent bonds.
Possible structure candidateUnverified identity
First calculated possible N-nitroso structure derived from Norfloxacin EP Impurity B / Norfloxacin Desethylene Impurity / Norfloxacin Ethylenediamine Analog ( Free Base), with the new N-nitroso group highlighted in amber
The new N-N=O atoms and bonds are highlighted. No CAS number or compound name is assigned by this calculation.
Candidate 1Possible N-nitroso structural candidate
Calculated formula
C14H15FN4O4
Candidate SMILES
CCn1cc(C(=O)O)c(=O)c2cc(F)c(N(CCN)N=O)cc21

Interpretation: A structural alert alone does not establish that a nitrosamine forms. Evaluate nitrite sources, amine reagents, pH, temperature, process sequence, purge and analytical evidence.

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 75001-77-3 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 75001-77-3 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

Norfloxacin

View API and impurity family

Other names

  • Norfloxacin EP Impurity B
  • Norfloxacin Desethylene Impurity
  • Norfloxacin Ethylenediamine Analog (Free Base)
  • 7-[(2-Aminoethyl)amino]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid
  • Desethylene Norfloxacin Hydrochloride
  • 75001-77-3
  • N5GYT8QQ4R
  • 7-((2-Aminoethyl)amino)-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
  • UNII-N5GYT8QQ4R
  • Norfloxacin impurity B [EP IMPURITY]
  • 7-(2-aminoethylamino)-1-ethyl-6-fluoro-4-oxoquinoline-3-carboxylic acid
  • 3-Quinolinecarboxylic acid, 7-((2-aminoethyl)amino)-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-

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