Alovudine (18F) Injection - Impurity E

444717-23-1

1(2H)-Pyrimidinecarboxylic acid, 3-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-3-O-[(4-nitrophenyl)sulfonyl]-β-D-threo-pentofuranosyl]-3,6-dihydro-5-methyl-2,6-dioxo-, 1,1-dimethylethyl ester; tert-butyl 3-((2R,4R,5R)-5-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-(((4-nitrophenyl)sulfonyl)oxy)tetrahydrofuran-2-yl)-5-methyl-2,6-dioxo-3,6-dihydropyrimidine-1(2H)-carboxylate; 1,1-Dimethylethyl 3-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-3-O-[(4-nitrophenyl)sulfonyl]-β-D-threo-pentofuranosyl]-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinecarboxylate;