Vardenafil Synonyms: Vardenafil hydrochloride; Valdenafil; Valdenafil HCl, Vardenafil HCL CAS:224785-90-4 MF: C23H33ClN6O4S MW: 525.06 Puritas: 99.91% Standard: USP Character: White to almost white crystalline powder, odorless, a little acerbity, solutum in aqua, ethanol Usage: A selective phsphodiesterase type 5 (PDE5) inhibitor; Pharmaceutical raw material; Indicated for the treatment of erectile dysfunction(ED).