Analytical chemistry

Liquid chromatographic determination of the enantiomeric composition of methamphetamine prepared from ephedrine and pseudoephedrine

FT Noggle Jr, J DeRuiter, CR Clark

Index: Analytical Chemistry, , vol. 58, # 8 p. 1643 - 1648

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Citation Number: 55

Abstract

... at reflux for 3 h. The reaction solution was then cooled to room temperature and the solvent volume reduced to ... ANALYTICAL CHEMISTRY, VOL. ... the erythro isomers displays a higher chemical shift and smaller coupling constant than the corresponding proton in the threo isomer ...