pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.0	IUPAC digitized pKa	0	-1	O=c1cn[nH]c(=O)[nH]1	O=c1cn[n-]c(=O)[nH]1,O=c1cn[nH]c(=O)[n-]1	mol9000	O=c1cn[nH]c(=O)[nH]1
6.9	IUPAC digitized pKa	0	-1	O=c1cn[nH]c(=O)[nH]1	O=c1cn[n-]c(=O)[nH]1,O=c1cn[nH]c(=O)[n-]1	mol9000	O=c1cn[nH]c(=O)[nH]1
12.9	IUPAC digitized pKa	-1	-2	O=c1cn[n-]c(=O)[nH]1,O=c1cn[nH]c(=O)[n-]1	O=c1cn[n-]c(=O)[n-]1	mol9000	O=c1cn[nH]c(=O)[nH]1