1 2UK 5'-O-[(R)-hydroxy{[(S)-hydroxy(phosphonoamino)phosphoryl]oxy}phosphoryl]-N-[3-(propanoylamino)propyl]guanosine 1.000 2 2UH N-[3-(propanoylamino)propyl]guanosine 5'-(trihydrogen diphosphate) 0.854 3 2UJ N-[3-(propanoylamino)propyl]guanosine 5'-(tetrahydrogen triphosphate) 0.778 4 9GM 2-amino-9-{5-O-[(S)-hydroxy{[(R)-hydroxy(phosphonoamino)phosphoryl]oxy}phosphoryl]-alpha-L-xylofuranosyl}-1,9-dihydro-6h-purin-6-one 0.756 5 GNP Phosphoaminophosphonic acid-guanylate ester 0.756 6 A0P 9-{5-O-[(R)-hydroxy{[(R)-hydroxy(phosphonoamino)phosphoryl]oxy}phosphoryl]-alpha-L-arabinofuranosyl}-9h-purin-6-amine 0.732 7 ANK 9-{5-O-[(R)-hydroxy{[(S)-hydroxy(phosphonoamino)phosphoryl]oxy}phosphoryl]-beta-L-ribofuranosyl}-9h-purin-6-amine 0.732 8 ANP Phosphoaminophosphonic acid-adenylate ester 0.732