Perfluorotriethylamine359-70-6100 % similar Perfluorotripropylamine338-83-059 % similar Perfluorotributylamine311-89-756 % similar Perfluorotripentylamine338-84-153 % similar Hexafluoroethane76-16-438 % similar Perfluorobutane355-25-931 % similar Octafluoropropane76-19-731 % similar Perfluoro-N-methylmorpholine382-28-530 % similar