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Substance Name: Clemastine [USAN:INN:BAN]
RN: 15686-51-8
UNII: 95QN29S1ID
InChIKey: YNNUSGIPVFPVBX-NHCUHLMSSA-N

Note

  • A histamine H1 antagonist used as the hydrogen fumarate in hay fever, rhinitis, allergic skin conditions, and pruritus. It causes drowsiness.

Molecular Formula

  • C21-H26-Cl-N-O

Molecular Weight

  • 343.895
 

Classification Codes

  • Anti-Allergic Agents
  • Antihistaminic
  • Antipruritics
  • Dermatologic Agents
  • Histamine Agents
  • Histamine Antagonists
  • Histamine H1 Antagonists
  • Neurotransmitter Agents

Names and Synonyms

Name of Substance

  • Clemastine
  • Clemastine [USAN:INN:BAN]

MeSH Heading

  • Clemastine

Synonyms

  • (+)-(2R)-2-(2-(((R)-p-Chloro-alpha-methyl-alpha-phenylbenzyl)oxy)ethyl)-1-methylpyrrolidine
  • 2-(2-(4-Chlor-alpha-methylbenzhydryloxy)ethyl)-1-methylpyrrolidin
  • Clemastina
  • Clemastina [INN-Spanish]
  • Clemastine
  • Clemastinum
  • Clemastinum [INN-Latin]
  • HS 592
  • HS-592
  • Meclastin
  • Mecloprodin
  • Pyrrolidine, 2-(2-(1-(4-chlorophenyl)-1-phenylethoxy)ethyl)-1-methyl-, (R-(R*,R*))-
  • UNII-95QN29S1ID

Systematic Name

  • Pyrrolidine, 2-(2-(1-(4-chlorophenyl)-1-phenylethoxy)ethyl)-1-methyl-, (R-(R*,R*))-

Registry Numbers

CAS Registry Number

  • 15686-51-8

FDA UNII

  • 95QN29S1ID

System Generated Number

  • 0015686518

Structure Descriptors

InChI

1S/C21H26ClNO/c1-21(17-7-4-3-5-8-17,18-10-12-19(22)13-11-18)24-16-14-20-9-6-15-23(20)2/h3-5,7-8,10-13,20H,6,9,14-16H2,1-2H3/t20-,21-/m1/s1

InChIKey

YNNUSGIPVFPVBX-NHCUHLMSSA-N

Smiles

c1([C@@](c2ccccc2)(OCC[C@@H]2[N@@](CCC2)C)C)ccc(Cl)cc1