Chemical identity

N-desmethyl Vardenafil Impurity

CAS 448184-46-1 · C21H28N6O4S

01Identity

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

Lazychem IDLC-21235
PubChem CID135565210
NameN-desmethyl Vardenafil Impurity
CAS RN448184-46-1
Molecular formulaC21H28N6O4S
Molecular weight460.55 g/mol
IUPAC name1-[[3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-piperazine
InChIKeyOKUKNGDVADFTHE-UHFFFAOYSA-N

02Structure identifiers

2D structurePubChem CID 135565210
Two-dimensional chemical structure of N-desmethyl Vardenafil Impurity, CAS 448184-46-1
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 stereocentres0
Ring count4
Secondary amines1
Tertiary amines0
N-methyl amine sites0
SMILESCCCC1=NC(=C2N1N=C(NC2=O)C3=C(C=CC(=C3)S(=O)(=O)N4CCNCC4)OCC)C
InChINot listed
Formula from structureC21H28N6O4S
Molecular weight from structure460.55 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 N-desmethyl Vardenafil Impurity 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 N-desmethyl Vardenafil Impurity, 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
C21H27N7O5S
Candidate SMILES
CCCc1nc(C)c2c(=O)[nH]c(-c3cc(S(=O)(=O)N4CCN(N=O)CC4)ccc3OCC)nn12

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 448184-46-1 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 448184-46-1 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

Vardenafil

View API and impurity family

Other names

  • Vardenafil Related Compound E/ Vardenafil N-Desethyl Impurity
  • Vardenafil Related Compound E
  • Vardenafil N-Desethyl Impurity
  • N-Desethylvardenafil
  • 448184-46-1
  • NEP2V4E7Q2
  • Imidazo(5,1-f)(1,2,4)triazin-4(1H)-one, 2-(2-ethoxy-5-(1-piperazinylsulfonyl)phenyl)-5-methyl-7-propyl-
  • RefChem:163222
  • Vardenafil-N-desethyl
  • 1-[[3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-piperazine
  • 2-(2-Ethoxy-5-(piperazin-1-ylsulfonyl)phenyl)-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one
  • Vardenafil (m1)

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