77945-21-2 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-, nonafluorobutylester 90293-54-2 6,11-Dioxa-3-thia-2,4,7,10-tetraazadodeca-7,9-dienoicacid, 8-[(dimethylamino)carbonyl]-2,4,9-trimethyl-5-oxo-,2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester