Catsyn offer gram to tons of Pentamethylene bis[1-(3,4-dimethoxybenzyl)-3,4-dihydro-6,7-dimethoxy-1H-isoquinoline-2-propionate], dioxalate | CAS 64228-78-0, its formula is C55H70N2O20, molecular weight is 1079.15g/mol and the purity is usually NLT 98%.