N-methylephedrine

The herbal stimulants Ephedra species, Catha edulis (khat), and Lophophora williamsii (peyote) have been abused for a long time… (More)

Methcathinone, a methyl derivative of cathinone, is an illicit drug also known as ephedrone. It is a stimulant found in the "khat… (More)

Dietary supplements that contain Ma Huang (ephedra alkaloids) and guarana (caffeine) are widely marketed and used in the U.S. for… (More)

An international collaborative study was conducted of a high-performance liquid chromatography (HPLC)-UV method for the… (More)

A method is described for the determination of ephedrine (E) and pseudoephedrine (PE) and their metabolites norephedrine (NE… (More)

The chromatographic behavior of ephedrines (norephedrine, ephedrine, pseudoephedrine and methylephedrine) on a C18 column was… (More)

The purpose of this study was to evaluate heart rate and blood pressure responses to a commercially available source of ma-haung… (More)

A total of 22 commercial Ephedra herba samples which belonged to EPHEDRA SINICA, E. INTERMEDIA, E. EQUISETINA, and E. DISTACHYA… (More)

Drug interactions in reinforcing effects of over-the-counter cough syrups were investigated by utilizing place preference… (More)

The contents of six Ephedra alkaloids, namely ephedrine, pseudoephedrine, norephedrine, norpseudoephedrine, methylephedrine and… (More)