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(2007/10/02)o-chlorophenyl phosphoro-p-anisidochloridate
5'-O-dimethoxytrityl-2'-O-tetrahydrofuranyl uridine
(4-Methoxy-phenyl)-phosphoramidic acid (2R,3R,4R,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-4-(tetrahydro-furan-2-yloxy)-tetrahydro-furan-3-yl ester 2-chloro-phenyl ester