4.1.1.21	0.00000034	-	4-Nitro-5-aminoimidazole ribonucleotide	in 50 mM Tris-HCl, 0.5 mM EDTA, pH 8.0	
4.1.1.21	0.00039	-	5-amino-1-(beta-D-ribofuranosyl)-4-nitropyrazole 5'-phosphate	in 50 mM Tris-HCl, 0.5 mM EDTA, pH 8.0	
4.1.1.21	0.0013	-	4-nitro-1-(beta-D-ribofuranosyl)imidazole 5'-phosphate	in 50 mM Tris-HCl, 0.5 mM EDTA, pH 8.0	
4.1.1.21	0.0028	-	5-amino-1-(beta-D-ribofuranosyl)-1,2,3-triazole-4-carboxylate 5'-phosphate	in 50 mM Tris-HCl, 0.5 mM EDTA, pH 8.0	
4.1.1.21	0.006	-	5-amino-1-(beta-D-ribofuranosyl)pyrazole-4-carboxylate 5'-phosphate	in 50 mM Tris-HCl, 0.5 mM EDTA, pH 8.0	
4.1.1.21	0.022	-	4-nitro-1-(-beta-D-ribofuranosyl)pyrazole 5'-phosphate	in 50 mM Tris-HCl, 0.5 mM EDTA, pH 8.0	
4.1.1.21	0.062	-	5-amino-1-(beta-D-ribofuranosyl)imidazole-4-carboxaldehyde 5'-phosphate	in 50 mM Tris-HCl, 0.5 mM EDTA, pH 8.0