pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.21	IUPAC digitized pKa	0	-1	O=c1nc[nH][nH]c1=O	O=c1nc[n-][nH]c1=O	mol9001	O=c1nc[nH][nH]c1=O
12.07	IUPAC digitized pKa	-1	-2	O=c1nc[n-][nH]c1=O	O=c1nc[n-][n-]c1=O	mol9001	O=c1nc[nH][nH]c1=O