1 FMP Formycin-5'-monophosphate 1.000 2 A1IXI 9-deazaguanosine-5'-monophosphate 0.808 3 IRP (1s)-1(9-deazahypoxanthin-9yl)1,4-dideoxy-1,4-imino-D-ribitol-5-phosphate 0.769 4 FMC (1s)-1-(7-amino-1h-pyrazolo[4,3-D]pyrimidin-3-yl)-1,4-anhydro-D-ribitol 0.750 5 IMU Phosphoric acid mono-[5-(2-amino-4-oxo-4,5-dihydro-3h-pyrrolo[3,2-D]pyrimidin-7-yl)-3,4-dihydroxy-pyrrolidin-2-ylmethyl] ester 0.741 6 FM2 2-(7-amino-6-methyl-3h-pyrazolo[4,3-D]pyrimidin-3-yl)-5-hydroxymethyl-tetrahydro-furan-3,4-diol 0.720 7 XCS (1r)-1-(4-amino-6-methyl-2-oxo-1,2-dihydroquinazolin-8-yl)-1,4-anhydro-2-deoxy-5-O-phosphono-D-erythro-pentitol 0.714 8 DRP 2-deoxyribofuranosyl-pyridine-5'-monophosphate 0.708