85630-98-4 1,2,3,4-Butanetetracarboxylic acid, tetramethyl ester, reaction products with 4,4'-(1-methylethylidene)bis[cyclohexanol] and 1,2,2,6,6-pentamethyl-4-piperidinol 38554-51-7 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-, 1-cyclobuten-1-ylester 835879-63-5 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-, 2-dibenzofuranylester 321970-34-7 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-, 4-bromophenylester 243137-82-8 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-,1-(diethoxyphosphinyl)-2-methyl-1-propenyl ester