4-01-00-01251 (Beilstein Handbook Reference) 421-20-5 BRN 1098714 CCRIS 1135 EINECS 207-004-3 Fluorosulfuric acid, methyl ester HSDB 4375 METHYL FLUOROSULFONATE Magic methyl Methyl fluorosulfate Methyl fluorosulphate Methyl fluosulfonate