pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.67	IUPAC digitized pKa	1	0	[NH3+]c1cc(Br)cc2ccccc12	Nc1cc(Br)cc2ccccc12	mol2427	Nc1cc(Br)cc2ccccc12
2.67000007629395	QSARToolbox	1	0	[NH3+]c1cc(Br)cc2ccccc12	Nc1cc(Br)cc2ccccc12	mol2427	Nc1cc(Br)cc2ccccc12