1	MIR	Monoethylphosphorylserine	1.000
2	MIS	Monoisopropylphosphorylserine	0.929
3	OMH	O-[(S)-hydroxy(methoxy)phosphoryl]-L-serine	0.923
4	SVX	O-[(R)-ethoxy(methyl)phosphoryl]-L-serine	0.857
5	GSE	L-alpha-glycerophosphorylserine	0.812
6	SGB	O-[(S)-methyl(1-methylethoxy)phosphoryl]-L-serine	0.800
7	KSV	(2r)-2,3-dihydroxypropyl ethyl hydrogen (S)-phosphate	0.786
8	SGR	O-[(R)-amino(methoxy)phosphoryl]-L-serine	0.786
9	SGX	O-[(S)-amino(methoxy)phosphoryl]-L-serine	0.786
10	RVX	O-[methyl(2-methylpropoxy)phosphoryl]-L-serine	0.750
11	SDP	2-amino-3-(diethoxy-phosphoryloxy)-propionic acid	0.750
12	SUN	O-[(R)-(dimethylamino)(ethoxy)phosphoryl]-L-serine	0.750
13	GPE	L-alpha-glycerophosphorylethanolamine	0.733
14	2RX	O-thiophosphono-L-serine	0.714
15	SBG	O-[(S)-hydroxy(methyl)phosphoryl]-L-serine	0.714
16	SEP	Phosphoserine	0.714
17	SVV	O-[(S)-amino(hydroxy)phosphoryl]-L-serine	0.714
18	SVW	O-[(R)-amino(hydroxy)phosphoryl]-L-serine	0.714
19	SXE	O-{(S)-ethoxy[(1-methylethyl)amino]phosphoryl}-L-serine	0.706