Entacapone Acid Price Not Available 5mg Entacapone Acid Supplier Page Catalog Number R014417 Molecular Formula C10H6N2O6 CAS# 160391-70-8 Purity ≥90% Inchi InChI=1S/C10H6N2O6/c11-4-6(10(15)16)1-5-2-7(12(17)18)9(14)8(13)3-5/h1-3,13-14H,(H,15,16)/b6-1+ Inchi Key XDDDOLQEZBJWFZ-LZCJLJQNSA-N SMILES C1=C(C=C(C(=C1[N+](=O)[O-])O)O)C=C(C#N)C(=O)O Size 5mg Supplier Page https://www.musechem.com/product/R014417.html