4507 R.P. 5,6-Diethoxy-1-(2,3-dimethoxyphenyl)isoquinoline hydrochloride Chlorhydrate de (dimethoxy-2,3 phenyl)-1 diethoxy-5,6 isoquinoleine [French] Isoquinoline, 5,6-diethoxy-1-(2,3-dimethoxyphenyl)-, hydrochloride NW7524400