Wiktionary
thioacetone
n. (context organic compound English) The thioketone CH3-CS-CH3
Wikipedia
Thioacetone
Thioacetone is an organosulfur with the chemical formula (CH)CS. It is a lightly studied compound. The compound has been isolated as an orange or brown liquid at low temperatures. Above -20 °C, thioacetone readily converts to a polymer and a trimer.