pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.35	IUPAC digitized pKa	-1	-2	O=S(=O)([O-])c1ccccc1O	O=S(=O)([O-])c1ccccc1[O-]	mol9705	O=S(=O)(O)c1ccccc1O