pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.65	IUPAC digitized pKa	0	-1	O=CNO	O=CN[O-]	mol669	O=CNO
8.77	Datawarrior	0	-1	O=CNO	O=CN[O-]	mol669	O=CNO
8.7700005	OCHEM	0	-1	O=CNO	O=CN[O-]	mol669	O=CNO
8.77999973297119	QSARToolbox	0	-1	O=CNO	O=CN[O-]	mol669	O=CNO
8.67000007629395	QSARToolbox	0	-1	O=CNO	O=CN[O-]	mol669	O=CNO