pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.27	IUPAC digitized pKa	0	-1	O=c1c(Br)cc(Br)cc(Br)c1O	O=c1c(Br)cc(Br)cc(Br)c1[O-]	mol10028	O=c1c(Br)cc(Br)cc(Br)c1O
4.26999998092651	QSARToolbox	0	-1	O=c1c(Br)cc(Br)cc(Br)c1O	O=c1c(Br)cc(Br)cc(Br)c1[O-]	mol10028	O=c1c(Br)cc(Br)cc(Br)c1O