pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.19	IUPAC digitized pKa	0	-1	O=[N+]([O-])C(I)[N+](=O)[O-]	O=[N+]([O-])[C-](I)[N+](=O)[O-]	mol8920	O=[N+]([O-])C(I)[N+](=O)[O-]
3.19000005722046	QSARToolbox	0	-1	O=[N+]([O-])C(I)[N+](=O)[O-]	O=[N+]([O-])[C-](I)[N+](=O)[O-]	mol8920	O=[N+]([O-])C(I)[N+](=O)[O-]