[1-hydroxy-1-(4-methylphenyl)propan-2-yl]azanium,chloride

4-Methylnorephedrine Hydrochloride is the salt of 4-Methylnorephedrine, a metabolite of the designer drug Mephedrone. 4-Methylnorephedrine is detected in rats and human urine by GC-MS, and it is formed during the metabolism of Mephedrone by the demethylation of the primary amine and the reduction of the keto moeity.