pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.03	IUPAC digitized pKa	0	-1	[NH3+]O[C@@H](C(=O)[O-])c1ccccc1,NO[C@@H](C(=O)O)c1ccccc1	NO[C@@H](C(=O)[O-])c1ccccc1	mol8499	NOC(C(=O)O)c1ccccc1