1	VR	2-methylpropyl hydrogen (R)-methylphosphonate	1.000
2	CVX	O-butlylmethylphosphonic acid ester group	0.800
3	VX	O-ethylmethylphosphonic acid ester group	0.778
4	GD7	(1r)-1,2,2-trimethylpropyl (R)-methylphosphinate	0.727
5	GD8	(1r)-1,2,2-trimethylpropyl (S)-methylphosphinate	0.727
6	U5O	(2e)-2-methylbut-2-en-1-yl dihydrogen phosphate	0.727
7	UCJ	Propan-2-yl hydrogen (S)-methylphosphonate	0.700