Salts (usually sodium salts) of
S-alkylthiosulfuric acid, of general structure
RSS(=O)2O−M+.
Use of this term is discouraged.
Source:
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1323