pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.9	IUPAC digitized pKa	1	0	C[NH+]=C1CC(=O)C=CC1=O	CN=C1CC(=O)C=CC1=O	mol5773	CN=C1CC(=O)C=CC1=O