Similar names: Perfluorobutanesulfonyl Fluoride; 1,1,2,2,3,3,4,4,4-Nonafluoro-1-butanesulfonyl fluoride (ACI); 1-Butanesulfonyl fluoride, nonafluoro- (6CI); 1,1,2,2,3,3,4,4,4-Nonafluorobutan-1-sulfonyl fluoride; 1,1,2,2,3,3,4,4,4-Nonafluorobutanesulfonyl fluoride; n-Nonafluorobutanesulfonyl fluoride; Nonafluoro-1-butanesulfonyl fluoride; Nonafluorobutanesulfonic acid fluoride; Nonafluorobutanesulfonyl fluoride; Nonaflyl fluoride; Perfluoro-1-butanesulfonyl fluoride; Perfluorobutan-1-sulfonyl fluoride; Perfluorobutanesulfonyl fluoride; Perfluorobutylsulfonyl fluoride; 1-Butanesulfonyl fluoride, 1,1,2,2,3,3,4,4,4-nonafluoro- (8CI, 9CI, ACI); 1,1,2,2,3,3,4,4,4-Nonafluoro-1-butanesulfonyl fluoride (ACI)