Chemical identity

Tamoxifen EP Impurity D (E)-Isomer

CAS 31750-45-5 · C25H27NO

01Identity

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

Lazychem IDLC-28804
PubChem CID3036721
NameTamoxifen EP Impurity D (E)-Isomer
CAS RN31750-45-5
Molecular formulaC25H27NO
Molecular weight357.49 g/mol
IUPAC name2-[4-[(E)-1,2-Diphenylprop-1-enyl]phenoxy]-N,N-dimethylethanamine
InChIKeyYBZBQYHSLRTDHL-LKUDQCMESA-N

02Structure identifiers

2D structurePubChem CID 3036721
Two-dimensional chemical structure of Tamoxifen EP Impurity D (E)-Isomer, CAS 31750-45-5
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 3 rings, includes aromatic atoms, includes aliphatic carbon. These statements are calculated from the published structure string.

Defined stereocentres0
Unassigned stereocentres0
Ring count3
Secondary amines0
Tertiary amines1
N-methyl amine sites2
SMILESC/C(C1=CC=CC=C1)=C(C2=CC=C(OCCN(C)C)C=C2)/C3=CC=CC=C3
InChINot listed
Formula from structureC25H27NO
Molecular weight from structure357.49 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 Tamoxifen EP Impurity D (E)-Isomer 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 Tamoxifen EP Impurity D (E)-Isomer, 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
C24H24N2O2
Candidate SMILES
C/C(=C(/c1ccccc1)c1ccc(OCCN(C)N=O)cc1)c1ccccc1

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 31750-45-5 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 31750-45-5 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

Tamoxifen

View API and impurity family

Other names

  • (E)-desethyl methyl tamoxifen
  • (E)-2-(4-(1, 2-Diphenyl-1-propenyl)phenoxy)-N, N-dimethylethanamine
  • 2-[4-(1, 2-Diphenyl-1-propenyl)phenoxy]-N, N-dimethylethanamine (E/Z Mixture)
  • Tamoxifen EP Impurity D (Free Base)

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