Definition of thioanhydrides

1. Compounds having the structure acyl-S-acyl. NOC Rules C-543.5, C-643.2. Also called diacylsulfanes. GNOC Recom. R-5.7.7.3. E.g. CH3C(=O)SC(=S)CH2CH3 acetic thiopropanoic thioanhydride. See acyl groups.