Chlorobutanol57-15-8100 % similar 1,1,1-Trichloro-2-methyl-2-propanol hemihydrate6001-64-582 % similar Pinacol76-09-553 % similar 1,1,1-Trifluoro-2-methyl-2-propanol507-52-840 % similar Hexachloroethane67-72-133 % similar