| Title:  Dexetimide CAS Registry Number:  21888-98-2 CAS Name:  (3S)-3-Phenyl-1¢-(phenylmethyl)-[3,4¢-bipiperidine]-2,6-dione Additional Names:  (S)-(+)-2-(1-benzyl-4-piperidyl)-2-phenylglutarimide;  (+)-3-(1-benzyl-4-piperidyl)-3-phenylpiperidine-2,6-dione;  (+)-1-benzyl-4-(2,6-dioxo-3-phenyl-3-piperidyl)piperidine;  dextrobenzetimide;  dexbenzetimide Molecular Formula:  C23H26N2O2 Molecular Weight:  362.46 Percent Composition:  C 76.21%, H 7.23%, N 7.73%, O 8.83% Literature References:  The dextroenantiomer responsible for the pharmacological activity of racemic benzetimide, q.v.  Resolution of isomers and comparative pharmacology:  Janssen et al., Arzneim.-Forsch. 21, 1365 (1971).  Abs config studies:  van Wijngaarden et al., Life Sci. 9, part 1, 1289 (1970); Spek et al., Nature 232, 575 (1971).  Clinical trials:  De Smedt et al., J. Clin. Pharmacol. 10, 207 (1970). Properties:  Crystals, mp 181-183°.  [a]D20 +125° (chloroform). Melting point:  mp 181-183° Optical Rotation:  [a]D20 +125° (chloroform)   Derivative Type:  Hydrochloride  CAS Registry Number:  21888-96-0 Manufacturers' Codes:  R-16470 Trademarks:  Tremblex (Janssen) Molecular Formula:  C23H26N2O2.HCl Molecular Weight:  398.93 Percent Composition:  C 69.25%, H 6.82%, N 7.02%, O 8.02%, Cl 8.89% Properties:  Crystals, mp 270-275°.  [a]D20 +125° (methanol).  LD50 i.v. in rats:  45 mg/kg (Janssen). Melting point:  mp 270-275° Optical Rotation:  [a]D20 +125° (methanol) Toxicity data:  LD50 i.v. in rats:  45 mg/kg (Janssen)   Therap-Cat:  Antiparkinsonian. Keywords:  Antiparkinsonian; Antimuscarinic.  |