pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.78	IUPAC digitized pKa	0	-1	O=C1N=C(O)C(Br)=CC1(Br)Br	O=C1N=C([O-])C(Br)=CC1(Br)Br	mol9471	O=C1N=C(O)C(Br)=CC1(Br)Br