3(2H)-ISOQUINOLINONE, 1-((3,4-DIETHOXYPHENYL)METHYL)-6,7-DIETHOXY-2-METHYL-, HYD 3(2H)-Isoquinolinone, 1-((3,4-diethoxyphenyl)methyl)-6,7-diethoxy-2-methyl-, hydrochloride 37528-72-6 6,7-Diethoxy-1-(3,4-diethoxybenzyl)-2-methyl-3(2H)-isoquinolone hydrochloride