pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.7	IUPAC digitized pKa	0	-1	CC1(CCCCC(=O)O)N=N1	CC1(CCCCC(=O)[O-])N=N1	mol10246	CC1(CCCCC(=O)O)N=N1