nitrenes substituted with hydrocarbyl sulfanyl groups,
H02894.png. Sulfenyl nitrenes is an older synonymous term. E.g. MeSN methylsulfanylnitrene or methylthionitrene. The synonymous term thiazynes (from the third canonical form; confusable with the hetarynes derivable from 1,2- and 1,4-thiazine) is best avoided.
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1341 (https://doi.org/10.1351/pac199567081307)