fidarestat fidarestat fidarestat (snk-860) is an aldose reductase inhibitor under investigation for treatment of diabetic neuropathy. fidarestat names preferred iupac name (2s,4s)-6-fluoro-2′,5′-dioxo-2,3-dihydrospirobenzopyran-4,4′-imidazolidine]-2-carboxamide other names (2s,4s)-6-fluoro-2',5'-dioxospiro-2-carboxamide identifiers cas number 136087-85-9 y105300-43-4 (non specific) y 3d model (jsmol) interactive image chembl chembl84446 chemspider 140679 kegg d01842 pubchem cid 160024 unii 8sh8t1164u y comptox dashboard (epa) dtxsid4046654 inchi inchi=1s/c12h10fn3o4/c13-5-1-2-7-6(3-5)12(4-8(20-7)9(14)17)10(18)15-11(19)16-12/h1-3,8h,4h2,(h2,14,17)(h2,15,16,18,19)/t8-,12-/m0/s1key: waapeizfchnlkk-ufbfgsqysa-n smiles c1cc2c(cc1f)3(c(o2)c(=o)n)c(=o)nc(=o)n3 properties chemical formula c12h10fn3o4 molar mass 279.227 g·mol−1 melting point 290–300 °c (554–572 °f; 563–573 k) except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references