of cyanic acid, HOC≡N, e.g. KOCN potassium cyanate, PhOCN phenyl cyanate.
See:
esters
,
isocyanates
Source: PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1329 [Terms] [Paper]