pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
-6.68	IUPAC digitized pKa	1	0	Brc1cc(-c2ccccc2)o[nH+]1	Brc1cc(-c2ccccc2)on1	mol6721	Brc1cc(-c2ccccc2)on1