pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.44	IUPAC digitized pKa	0	-1	O=S(=O)([O-])c1cc[nH+]cc1	O=S(=O)([O-])c1ccncc1	mol6556	O=S(=O)(O)c1ccncc1
3.4400001	OCHEM	0	-1	O=S(=O)([O-])c1cc[nH+]cc1	O=S(=O)([O-])c1ccncc1	mol6556	O=S(=O)(O)c1ccncc1
3.44000005722046	QSARToolbox	0	-1	O=S(=O)([O-])c1cc[nH+]cc1	O=S(=O)([O-])c1ccncc1	mol6556	O=S(=O)(O)c1ccncc1
3.14000010490417	QSARToolbox	0	-1	O=S(=O)([O-])c1cc[nH+]cc1	O=S(=O)([O-])c1ccncc1	mol6556	O=S(=O)(O)c1ccncc1