Category: Active Pharmaceutical Ingredient ( API) CAS No : [ 128-62-1] Chemical Name: ( 3S) -6, 7-Dimethoxy-3-[ ( 5R) -4-methoxy-6-methyl-5, 6, 7, 8-tetrahydro-1, 3-dioxolo [ 4, 5-g] isoquinolin-5-yl] isobenzofuran-1( 3H) -one. Pharmacopoeial Reference: Ph.Eur / B.P / J.P Molecular Weight: 413.4 Molecular Formula: C22H23NO7