pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.7	IUPAC digitized pKa	1	0	BrC1=[NH+]NC2(CCC2)C1,BrC1=N[NH2+]C2(CCC2)C1	BrC1=NNC2(CCC2)C1	mol6803	BrC1=NNC2(CCC2)C1