pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.592	IUPAC digitized pKa	0	-1	COc1ccc(O)c(N=O)c1	COc1ccc([O-])c(N=O)c1	mol10152	COc1ccc(O)c(N=O)c1