pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.94	IUPAC digitized pKa	0	-1	CCCC(=O)N(O)c1ccccc1	CCCC(=O)N([O-])c1ccccc1	mol11386	CCCC(=O)N(O)c1ccccc1