pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.32	IUPAC digitized pKa	0	-1	O=C1N[C@@H](C(=O)O)CS1	O=C1N[C@@H](C(=O)[O-])CS1	mol9276	O=C1NC(C(=O)O)CS1