pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.71	IUPAC digitized pKa	0	-1	Nc1[nH]c(=O)c(C(=O)O)nc1C=O,Nc1[nH]c(=O)c(C(=O)[O-])[nH+]c1C=O	Nc1[nH]c(=O)c(C(=O)[O-])nc1C=O	mol9659	Nc1[nH]c(=O)c(C(=O)O)nc1C=O
7.63	IUPAC digitized pKa	-1	-2	Nc1[nH]c(=O)c(C(=O)[O-])nc1C=O	Nc1[n-]c(=O)c(C(=O)[O-])nc1C=O	mol9659	Nc1[nH]c(=O)c(C(=O)O)nc1C=O