thioaldehyde S-oxides

synonym: sulfines
https://doi.org/10.1351/goldbook.T06350
Compounds having the structure $\ce{RC(=S=O)H}$. (Also known by the disapproved term 'sulfines' which includes thioaldehyde S-oxides and thioketone S-oxides).
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]