532.2 - Names of thiones formed by placing the syllables "thio-" before the name of the corresponding ketone are retained for thio analogues of ketones having accepted non-systematic names, but the nomenclature of the preceding Rule (C-532.1) is in general preferred.
Examples to Rule C-532.1
532.3 - Where a prefix is needed for naming =S in a thioketone, the prefix "thioxo-" is used.
Examples to Rule C-532.2
532.4 - In radicofunctional nomenclature, compounds are named by use of the functional class name "thioketone"
Examples to Rule C-532.3
See Recommendations'93 R-18.104.22.168
Example to Rule C-532.4
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