pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.11	IUPAC digitized pKa	-1	-2	O=S(=O)([O-])c1cccc2c(O)cccc12	O=S(=O)([O-])c1cccc2c([O-])cccc12	mol11304	O=S(=O)(O)c1cccc2c(O)cccc12
9.0	QSARToolbox	-1	-2	O=S(=O)([O-])c1cccc2c(O)cccc12	O=S(=O)([O-])c1cccc2c([O-])cccc12	mol11304	O=S(=O)(O)c1cccc2c(O)cccc12