562 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
* | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {41} |
821 | DF | .~ Sulfur halides (i.e., compounds having halogen attached directly to sulfur by nonionic bonding) {5} |
836 | .~.~ Perchloro methyl mercaptan per se (i.e., trichloromethane sulfenyl chloride) |