In this chemical reaction, CH 4 is readily formed from the S-CH 3 groups of organosulfur compounds in a model system containing iron(II/III), H 2 O 2 and ascorbate that uses organic compounds with heterobonded CH 3 groups for CH 4 generation under ambient (1,000 mbar and 22°C) and aerobic (21% O 2 ) conditions.
Source: wiktionary