1	MPH	(1-amino-3-methylsulfanyl-propyl)-phosphonic acid	1.000
2	MPJ	(1-amino-3-methylsulfanyl-propyl)-phosphinic acid	0.900
3	3V2	[(1r)-1-aminopropyl]phosphonic acid	0.800
4	PVA	1-amino-2-methyl-propylphosphonic acid	0.727
5	57H	Prop-2-en-1-ylphosphonic acid	0.700
6	GG7	[(1r)-1-aminoethyl]phosphonic acid	0.700