pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.45	IUPAC digitized pKa	0	-1	O=C1Nc2nn[nH]c2[C@H](NO)N1	O=C1Nc2nn[n-]c2[C@H](NO)N1	mol9190	O=C1Nc2nn[nH]c2C(NO)N1
-1.43	IUPAC digitized pKa	3	2	O=C1Nc2[nH+][nH+][nH]c2[C@H]([NH2+]O)N1	O=C1Nc2[nH+][nH+][nH]c2[C@H](NO)N1	mol9190	O=C1Nc2nn[nH]c2C(NO)N1