pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.85	IUPAC digitized pKa	0	-1	O=C(O)c1ncccn1	O=C([O-])c1ncccn1	mol1344	O=C(O)c1ncccn1
2.8499999	OCHEM	0	-1	O=C(O)c1ncccn1	O=C([O-])c1ncccn1	mol1344	O=C(O)c1ncccn1
2.5	OCHEM	0	-1	O=C(O)c1ncccn1	O=C([O-])c1ncccn1	mol1344	O=C(O)c1ncccn1
-1.13	IUPAC digitized pKa	1	0	O=C(O)c1nccc[nH+]1	O=C(O)c1ncccn1	mol1344	O=C(O)c1ncccn1