pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.59	IUPAC digitized pKa	0	-1	NC(=[NH2+])NOCCCC(=O)[O-]	N=C(N)NOCCCC(=O)[O-]	mol8539	N=C(N)NOCCCC(=O)O
4.07	IUPAC digitized pKa	1	0	NC(=[NH2+])NOCCCC(=O)O	NC(=[NH2+])NOCCCC(=O)[O-]	mol8539	N=C(N)NOCCCC(=O)O