1	EAP	2-amino-vinyl-phosphate	1.000
2	OPE	Phosphoric acid mono-(2-amino-ethyl) ester	1.000
3	EFS	Ethyl dihydrogen phosphate	0.875
4	PSE	O-phosphoethanolamine	0.800
5	ISP	Phosphorylisopropane	0.778
6	UVW	Acetylphosphate	0.778
7	ATJ	Ethyl hydrogen phosphonate	0.750
8	KOP	Methyl dihydrogen phosphate	0.750
9	SEP	Phosphoserine	0.727
10	1SH	2-(methylamino)ethyl dihydrogen phosphate	0.700
11	PDI	Phosphoric acid mono-(3-hydroxy-propyl) ester	0.700
12	PGA	2-phosphoglycolic acid	0.700
13	U4R	(2e)-but-2-en-1-yl dihydrogen phosphate	0.700