1	DCX	Decyl(dimethyl)phosphine oxide	1.000
2	9PD	Dodecyldimethylphosphine oxide	0.875
3	ULO	Nonyl(oxo)di(propan-2-yl)-lambda~5~-phosphane	0.722
4	D10	Decane	0.714
5	DPE	N-undecanylphosphonate methyl ester group	0.706