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(R)-(4-Chlorophenyl)(phenyl)methanamine structure

Chiral antihistamine intermediate

(R)-(4-Chlorophenyl)(phenyl)methanamine

Chiral (R)-benzhydrylamine — the stereogenic core that delivers the eutomer in levocetirizine.

CAS No.
163837-57-8
Molecular formula
C₁₃H₁₂ClN
Mol. weight
217.70 g/mol
Appearance
White to off-white crystalline solid
API target
Levocetirizine dihydrochloride (CAS 130018-87-0)

Description

This enantiomerically pure benzhydrylamine is the chiral key intermediate to levocetirizine, the (R)-enantiomer of cetirizine. It is condensed with piperazine derivatives to install the active diarylmethylpiperazine pharmacophore with the correct absolute configuration.

Applications

  • Levocetirizine dihydrochloride manufacture
  • Chiral resolution reference