pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.5	IUPAC digitized pKa	0	-1	O=C([O-])c1nc2c[nH+]c[nH]c-2nc1=O,O=C(O)c1nc2cnc[nH]c-2nc1=O	O=C([O-])c1nc2cnc[nH]c-2nc1=O	mol10042	O=C(O)c1nc2cnc[nH]c-2nc1=O
6.73	IUPAC digitized pKa	-1	-2	O=C([O-])c1nc2cnc[nH]c-2nc1=O	O=C([O-])c1nc2cnc[n-]c-2nc1=O	mol10042	O=C(O)c1nc2cnc[nH]c-2nc1=O