Demethylpiperazinyl Sildenafil Sulfonic Acid Price Not Available 10mg Demethylpiperazinyl Sildenafil Sulfonic Acid Supplier Page Catalog Number R055818 Molecular Formula C17H20N4O5S CAS# 1357931-55-5 Purity ≥98% Inchi InChI=1S/C17H20N4O5S/c1-4-6-12-14-15(21(3)20-12)17(22)19-16(18-14)11-9-10(27(23,24)25)7-8-13(11)26-5-2/h7-9H,4-6H2,1-3H3,(H,18,19,22)(H,23,24,25) Inchi Key DFABUTFBIDMPKZ-UHFFFAOYSA-N SMILES CCCC1=NN(C2=C1NC(=NC2=O)C3=C(C=CC(=C3)S(=O)(=O)O)OCC)C Size 10mg Supplier Page https://www.musechem.com/product/R055818.html