pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
11.38	IUPAC digitized pKa	-1	-2	O=S(=O)([O-])c1c(O)ccc2ccccc12	O=S(=O)([O-])c1c([O-])ccc2ccccc12	mol11302	O=S(=O)(O)c1c(O)ccc2ccccc12
10.960000038147	QSARToolbox	-1	-2	O=S(=O)([O-])c1c(O)ccc2ccccc12	O=S(=O)([O-])c1c([O-])ccc2ccccc12	mol11302	O=S(=O)(O)c1c(O)ccc2ccccc12