2,5-Dimethoxy-4-ethylamphetamine 2,5-Dimethoxy-4-ethylamphetamine hydrochloride 22139-65-7 4-Ethyl-2,5-dimethoxy-alpha-methylphenethylamine hydrochloride 53581-54-7 Benzeneethanamine, 4-ethyl-2,5-dimethoxy-alpha-methyl-, hydrochloride DEA No. 7399 DOET Phenethylamine, 4-ethyl-2,5-dimethoxy-alpha-methyl-, hydrochloride