Product Name: Sildenafil Mesylate Molecular Formula: C22H30B6O4S. CH3SO3H Molecular Weight: 570 Appearance: white to almost white crystalline powder, odorless, a little acerbity, soluble in water, ethanol Specification: Assay: 99.90%; Sildenafil: 0.132%; Pls find our main products as follows: Sildenafil sildenafil(viagra) Sildenafil Mesylate Vardenafil/Fardenafil Levitra Tadarafil-B Tadarafil-B(CialisIC-351 ) Hongdenafil Acetildenafil Email:hubeizd at gmail dot com