1,N(6)-Etheno-imido ATP 3H-Imidazo(2,1-i)purine, 3-(5-O-(hydroxy((hydroxy(phosphonoamino)phosphinyl)oxy)phosphinyl)-beta-D-ribofuranosyl)- 78368-53-3 Epsilon-amppnp Ethenoadenylyl imidodiphosphate