124-63-0 AI3-52234 Chloro methyl sulfone Chloromethyl sulfone EINECS 204-706-1 HSDB 5605 METHYLSULFONYL CHLORIDE Mesyl chloride Methanesulfonic acid chloride Methanesulfonyl chloride Methanesulfonyl chloride [UN3246] [Poison] Methanesulfuryl chloride Methanesulphonyl chloride Methyl sulfochloride Methyl sulfonyl chloride NSC 15039 UN3246