Isonicotinic Acid-d4 Price Not Available 1mg Isonicotinic Acid-d4 Supplier Page Catalog Number R050681 Molecular Formula C6H5NO2 CAS# 53907-55-4 Purity ≥98% Inchi InChI=1S/C6H5NO2/c8-6(9)5-1-3-7-4-2-5/h1-4H,(H,8,9)/i1D,2D,3D,4D Inchi Key TWBYWOBDOCUKOW-RHQRLBAQSA-N SMILES C1=CN=CC=C1C(=O)O Size 1mg Supplier Page https://www.musechem.com/product/R050681.html