xanthic acids [obsolete]

Compounds having the structure ROC(=S)SH. Thus O-esters of dithiocarbonic acid. Salts and esters of xanthic acid are xanthates. Use of this term is not recommended.
Source:
PAC, 1995, 67, 1307 (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1374