pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.68	IUPAC digitized pKa	-1	-2	O=c1ccc(S(=O)(=O)[O-])ccc1O	O=c1ccc(S(=O)(=O)[O-])ccc1[O-]	mol10128	O=c1ccc(S(=O)(=O)O)ccc1O
4.92	IUPAC digitized pKa	-1	-2	O=c1ccc(S(=O)(=O)[O-])ccc1O	O=c1ccc(S(=O)(=O)[O-])ccc1[O-]	mol10128	O=c1ccc(S(=O)(=O)O)ccc1O