1	NTJ	R-ethyl N,N-dimethylphosphonamidate	1.000
2	ELT	Ethoxy-~{N},~{N}-dimethyl-phosphonamidic acid	0.889
3	TC3	Ethyl hydrogen methylamidophosphate	0.778
4	TUN	Ethyl hydrogen diethylamidophosphate	0.727
5	TN7	Ethyl hydrogen ethylamidophosphate	0.700