Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 61-25-6, Whether you call it Papaverine Hydrochloride or 1-((3 -4-Dimethoxyphenyl)methyl)-6 -7-dimethoxyisoquinoline Hydrochloride you can be assured the products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.