Synonyms: (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-methyl-pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione; Tadalafil Molecular Formula: C22H19N3O4 Molecular Weight: 389.40 CAS Registry Number: 171596-29-5 Appearance:White powder Assay:NLT 99.5% Melting point:302.0℃ ~ 303.0℃ Loss on drying:NMT 0.5% Heavy metal content:NMT 10ppm Usage:Used in the treatment of male erectile ...