pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.09	IUPAC digitized pKa	1	0	C[NH2+]c1ncc(Br)cn1,CNc1ncc(Br)c[nH+]1	CNc1ncc(Br)cn1	mol1342	CNc1ncc(Br)cn1