pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.99	IUPAC digitized pKa	-1	-2	O=S(=O)([O-])c1ccc(N=NN(O)c2ccccc2)cc1	O=S(=O)([O-])c1ccc(N=NN([O-])c2ccccc2)cc1	mol11787	O=S(=O)(O)c1ccc(N=NN(O)c2ccccc2)cc1