1	NIS	2-nitropropane	1.000
2	NBT	(2s)-2-nitrobutane	0.857
3	NIE	Nitroethane	0.833
4	XEP	2-nitrosopropane	0.833
5	N1P	1-nitropropane	0.714
6	XQZ	N-T-butylhydroxylamine	0.714