1	1PS	3-pyridinium-1-ylpropane-1-sulfonate	1.000
2	KH2	3-(1-methylpiperidinium-1-yl)propane-1-sulfonate	0.929
3	MPO	3[N-morpholino]propane sulfonic acid	0.857
4	41D	3-[2-(2-hydroxyethyl)pyridinium-1-yl]propane-1-sulfonate	0.812
5	6BX	(2s)-2-hydroxy-3-(morpholin-4-yl)propane-1-sulfonic acid	0.800
6	6BY	(2r)-2-hydroxy-3-(morpholin-4-yl)propane-1-sulfonic acid	0.800
7	EP1	3-[4-(2-hydroxyethyl)piperazin-1-yl]propane-1-sulfonic acid	0.706