This shows phenethylamine in blue with its substitution points marked.<unk>  and its substituted derivatives contain a CH3 group at the alpha-position (Rα). NH2 group which is unmarked.<unk> s are a subgroup of the substituted phenethylamine class of compounds. Substitution of hydrogen atoms results in a large class of compounds. Typical reaction is substitution by methyl and sometimes ethyl groups at the amine and phenyl sites: Substance Substituents Structure Sources N α β phenyl group 2 3 4 5 Phenethylamine Phenethylamine<unk>  (α-methylphenylethylamine) -CH3<unk>  Methamphetamine (N-methylamphetamine) -CH3 -CH3 Methamphetamine Phentermine (α-methylamphetamine) -(CH3)2 Phentermine Ephedrine -CH3 -CH3 -OH (+)-Ephedrine Pseudoephedrine -CH3 -CH3 -OH (+)-Pseudoephedrine Cathinone -CH3 =O Cathinone Methcathinone (ephedrone) -CH3 -CH3 =O Methcathinone MDA (3,4-methylenedioxyamphetamine) -CH3 3,4-methylenedioxyamphetamine MDMA (3,4-methylenedioxymethamphetamine) -CH3 -CH3 3,4-methylenedioxymethamphetamine MDEA (3,4-methylenedioxy-N-ethylamphetamine) -CH2-CH3 -CH3 methylenedioxyethylamphetamine EDMA (3,4-ethylenedioxy-N-methylamphetamine) -CH3 -CH3 3,4-ethylenedioxy-N-methylamphetamine MBDB (N-methyl-1,3-benzodioxolylbutanamine) -CH3 -CH2-CH3 N-methyl-1-(3,4-methylenedioxyphenyl)-2-aminobutane PMA (para-methoxyamphetamine) -CH3 -O-CH3 para-methoxyamphetamine PMMA (para-methoxymethamphetamine) -CH3 -CH3 -O-CH3 para-methoxymethamphetamine 4-MTA (4-methylthioamphetamine) -CH3 -S-CH3 4-methylthioamphetamine 3,4-DMA (3,4-dimethoxyamphetamine) -CH3 -O-CH3 -O-CH3 dimethoxyamphetamine 3,4,5-Trimethoxyamphetamine (α-methylmescaline) -CH3 -O-CH3 -O-CH3 -O-CH3 trimethoxyamphetamine DOM (2,5-dimethoxy-4-methylamphetamine) -CH3 -O-CH3 -CH3 -O-CH3 2,5-dimethoxy-4-methylamphetamine DOB (2,5-dimethoxy-4-bromoamphetamine) -CH3 -O-CH3 -Br -O-CH3 2,5-dimethoxy-4-bromoamphetamine
Substituted amphetamine
Substituted phenethylamine
Substituted tryptamine
Synthetic cannabinoids
Amphetamine type stimulant
Antipsychotic ester
Psychedelic drug
Loline alkaloid