pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.515	OCHEM	0	-1	O=C(O)C=CBr	O=C([O-])C=CBr	mol33043	O=C(O)C=CBr
3.71000003814697	QSARToolbox	0	-1	O=C(O)C=CBr	O=C([O-])C=CBr	mol33043	O=C(O)C=CBr