thioaldehydes

https://doi.org/10.1351/goldbook.T06349
Compounds in which the oxygen of an @[email protected] has been replaced by divalent sulfur, RC(=S)H, e.g. CH3CH2C(=S)H propanethial.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1372 [Terms] [Paper]