pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
0.3	IUPAC digitized pKa	1	0	Brc1c[nH+][nH]c1-c1ccccc1	Brc1cn[nH]c1-c1ccccc1	mol6815	Brc1cn[nH]c1-c1ccccc1