pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.63	IUPAC digitized pKa	0	-1	Nc1c(C(=O)O)[nH]c(=O)[nH]c1=O	Nc1c(C(=O)[O-])[nH]c(=O)[nH]c1=O	mol9363	Nc1c(C(=O)O)[nH]c(=O)[nH]c1=O
8.72	IUPAC digitized pKa	-1	-2	Nc1c(C(=O)[O-])[nH]c(=O)[nH]c1=O	Nc1c(C(=O)[O-])[n-]c(=O)[nH]c1=O	mol9363	Nc1c(C(=O)O)[nH]c(=O)[nH]c1=O