pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.48	IUPAC digitized pKa	-1	-2	O=S(=O)([O-])c1cccc2ccc(O)cc12	O=S(=O)([O-])c1cccc2ccc([O-])cc12	mol11305	O=S(=O)(O)c1cccc2ccc(O)cc12
9.28999996185303	QSARToolbox	-1	-2	O=S(=O)([O-])c1cccc2ccc(O)cc12	O=S(=O)([O-])c1cccc2ccc([O-])cc12	mol11305	O=S(=O)(O)c1cccc2ccc(O)cc12