5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-3'-Thymidylic Acid Bis(2-cyanoethyl) Ester is an intermediate in synthesizing Thymidine 5’-Triphosphate, 3’-Phosphate Triethylamine Salt (T410015), a derivative of Thymidine 5’-Triphosphate which is used for the biosynthesis of deoxyribonucleic acids by DNA polymerases and reverse transcriptases.