Salts and esters of thiocyanic acid
HSC≡N, e.g.
CH3SC≡N methyl thiocyanate.
See: isothiocyanates
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1372 (https://doi.org/10.1351/pac199567081307)