Chemical identity

Terfenadine EP Impurity C / Terfenadine N-Oxide

CAS 634901-83-0 · C32H41NO3

01Identity

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

Lazychem IDLC-29184
PubChem CID87728825
NameTerfenadine EP Impurity C / Terfenadine N-Oxide
CAS RN634901-83-0
Molecular formulaC32H41NO3
Molecular weight487.69 g/mol
IUPAC name1-[(4RS)-4-[4-(1,1-Dimethylethyl)phenyl]-4-hydroxybutyl]-4-(hydroxydiphenyl methyl)piperidine 1-oxide
InChIKeyCFDFVVYPNXXEDN-UHFFFAOYSA-N

02Structure identifiers

2D structurePubChem CID 87728825
Two-dimensional chemical structure of Terfenadine EP Impurity C / Terfenadine N-Oxide, CAS 634901-83-0
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 stereocentres1
Ring count4
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCC(C)(C)C1=CC=C(C=C1)C(CCC[N+]2(CCC(CC2)C(C3=CC=CC=C3)(C4=CC=CC=C4)O)[O-])O
InChINot listed
Formula from structureC32H41NO3
Molecular weight from structure487.69 g/mol

03Stereochemistry

The published structure contains 0 defined and 1 unassigned tetrahedral stereocentre. The exact wedge and dash depiction is shown above.

Defined centres0Structure assigned
Unassigned centres1Structure unspecified
Assignment statusUnassignedExact published identity
Tetrahedral upper bound≤ 2Before 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 634901-83-0 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 634901-83-0 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

Terfenadine

View API and impurity family

Other names

  • Terfenadine EP Impurity C
  • Terfenadine N-Oxide
  • 1-Piperidinebutanol, α-[4-(1,1-dimethylethyl)phenyl]-4-(hydroxydiphenylmethyl)-, 1-oxide
  • 1-((4RS)-4-(4-(1,1-Dimethylethyl)phenyl)-4-hydroxybutyl)-4-(hydroxydiphenylmethyl)piperidine 1-oxide
  • 634901-83-0
  • ZQB8G2S2RB
  • Terfenadine impurity C [EP]
  • TERFENADINE IMPURITY C [EP IMPURITY]
  • 1-Piperidinebutanol, alpha-(4-(1,1-dimethylethyl)phenyl)-4-(hydroxydiphenylmethyl)-, 1-oxide
  • Terfenadine impurity C
  • RefChem:196883
  • 1-(4-(4-(tert-Butyl)phenyl)-4-hydroxybutyl)-4-(hydroxydiphenylmethyl)piperidine 1-oxide

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