pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.21	IUPAC digitized pKa	0	-1	[NH3+]CC[S@+]([O-])CCC(=O)[O-]	NCC[S@+]([O-])CCC(=O)[O-]	mol8480	NCC[S+]([O-])CCC(=O)O