1,N(6)-Ethenoadenosylcobalamin 54635-00-6 Cobinamide, Co-(3-(5-deoxy-beta-D-ribofuranosyl)-3H-imidazo(2,1-i)purine-5') deriv., hydroxide, dihydrogen phosphate (ester), inner salt, 3'-ester with 5,6-dimethyl-1-alpha-D-ribofuranosyl-1H-benzimidazole NSC 164644