pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.9	IUPAC digitized pKa	1	0	Cc1[nH+]n(C)c(N)nc1=O,Cc1nn(C)c([NH3+])nc1=O,Cc1nn(C)c(N)[nH+]c1=O	Cc1nn(C)c(N)nc1=O	mol9403	Cc1nn(C)c(N)nc1=O