pseudohalogen oxoacid cyanic acid 0 KEGG:C01417 CHNO PMID:6493050 Zyansaeure 43.025 Gmelin:839 CHEBI:28024 Chemspider:525 XLJMAIOERFSOGZ-UHFFFAOYSA-N Beilstein:1732479 PDBeChem:0NM PMID:20261792 PMID:20261791 CAS:420-05-3 PMID:16744204 PMID:12590561 hydrogen nitridooxocarbonate nitridooxocarbonic acid CHEBI:3968 acidum cyanicum acide cyanique hydroxidonitridocarbon Cyanic acid CHEBI:23422 HOCN OC#N PMID:237898 PMID:4368066 chebi_ontology PMID:16743625 PMID:20340793 acido cianico [C(N)OH] PMID:19624192 Cyansaeure 43.00581 InChI=1S/CHNO/c2-1-3/h3H PMID:12573832 cyanate isocyanic acid one-carbon compound