pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.75	IUPAC digitized pKa	-1	-2	O=Nc1c(O)cc(S(=O)(=O)[O-])c2[nH]ncc12,O=Nc1c(O)cc(S(=O)(=O)O)c2[n-]ncc12	O=Nc1c([O-])cc(S(=O)(=O)[O-])c2[nH]ncc12,O=Nc1c(O)cc(S(=O)(=O)[O-])c2[n-]ncc12	mol10305	O=Nc1c(O)cc(S(=O)(=O)O)c2[nH]ncc12