pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.72	IUPAC digitized pKa	0	-1	O=C([O-])C[NH+]=C1CCCC1	O=C([O-])CN=C1CCCC1	mol5367	O=C(O)CN=C1CCCC1
8.7200003	OCHEM	0	-1	O=C([O-])C[NH+]=C1CCCC1	O=C([O-])CN=C1CCCC1	mol5367	O=C(O)CN=C1CCCC1