is conjugate acid of is tautomer of cyanic acid cyanate isocyanic acid 0 43.006 43.02478 A colourless, volatile, poisonous inorganic compound with the formula HNCO; the simplest stable chemical compound that contains carbon, hydrogen, nitrogen, and oxygen, the four most commonly-found elements in organic chemistry and biology. Beilstein:1616281 CAS:75-13-8 CHEBI:29202 CHNO Gmelin:840 HN=C=O HNCO ICA InChI=1S/CHNO/c2-1-3/h2H N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N PMID:19494520 PMID:26124058 PMID:26760716 PMID:977566 Reaxys:1616281 [C(NH)O] carbimide chebi_ontology hydrogen isocyanate isocyanic acid isocyansaeure isozyansaeure methenamide oxidoazanediidocarbon hydracid one-carbon compound