Hongdenafil Acetildenafil 99% Muscle Building Steroids Male for Body Building Product name:Hongdenafil CAS: 831217-01-7 MF C25H34N6O3 MW 466.583 Appearance:White crystalline powder Assay:99% Applications: Hongdenafil is a designer drug which acts as a phosphodiesterase inhibitor. It is a structural analogue of Sidenafil (Viagra), which has been detected in numerous different brands of supposedly "herbal" aphrodisiac products sold to boost libido and alleviate erectile dysfunction.