pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.53	IUPAC digitized pKa	-1	-2	O=S(=O)([O-])c1ccc(O)c(N=Nc2ccccc2)c1	O=S(=O)([O-])c1ccc([O-])c(N=Nc2ccccc2)c1	mol11772	O=S(=O)(O)c1ccc(O)c(N=Nc2ccccc2)c1