2,6-Piperazinedione, 4-(3,4-dimethoxyphenethyl)-, hydrochloride 4-(3,4-Dimethoxyphenethyl)-2,6-piperazinedione hydrochloride 73771-26-3 Diverazone N-(3',4'-Dimethoxyphenylethyl)-2,6-diketopiperazine hydrochloride