pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.62	IUPAC digitized pKa	1	0	C1=[NH+]NCC1,C1=N[NH2+]CC1	C1=NNCC1	mol6839	C1=NNCC1