Patent ID: 8461317

Claim:
A composition comprising a selectively cleavable linker for polymer synthesis comprising a linker group having first and second ends, wherein said first end comprises a substrate attaching group and wherein said second end comprises a polymer attaching group, wherein said polymer attaching group is covalently linked to an anchor moiety, wherein said anchor moiety is selected from anchor moieties having the following structure: wherein P 1 and P 2 are chain units comprised of a polymer or a linker and a polymer; B is a pyrimidine or purine base; R 1 is a substitution group selected from CH 3 , R 2 Ph, and CH 2 CH 2 CN, wherein R 2 is a substitution group selected from SCH 3 , Cl, NO 2 ; R is a protecting group selected from OC(O)R 1 and t-butyldimethylsilyl (TBDMS), and wherein the anchor moiety is selectively cleavable.