pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.9	IUPAC digitized pKa	0	-1	CC1=CC(=NO)C=CC1=O	CC1=CC(=N[O-])C=CC1=O	mol10142	CC1=CC(=NO)C=CC1=O