Ephedrine is the precursor of synthetic amphetamines. The diastereomer of ephedrine, pseudoephedrine is found in Ephedra sinica together along with ephedrine. Ephedrine and pseudoephedrine are both generally used for weight reduction and performance enhancement. They are also precursors of methamphetamine synthesis. The activity of<unk> s depends on their unsubstituted phenyl ring, alphy methyl group, primary amino group and two-carbon side-chain that connects the primary amino group and the phenyl ring. Hallucinogenic activity of<unk>  are often caused by multiple substitutions on the phenyl ring, examples include 4-bromo-2,5-dimethoxyamphetamine and 2,5-dimethoxy-4-methylamphetamine. When the methoxy group is substituted in the para position of the<unk>  molecule, the hallucinogenic potency will become significantly high.
Amphetamine type stimulant
Atypical antidepressant
Antipsychotic ester
Substituted amphetamine
Heterocyclic antidepressant
Synthetic cannabinoids
Tetracyclic antidepressant
Tricyclic antidepressant