Patent ID: 7741472

Claim:
A chemical compound comprising at least once the structure wherein A represents the 5′ end of a nucleotide, a nucleotide chain, or a linker bound to a solid phase, B represents the 3′ end of a nucleotide, a nucleotide chain, or a linker, D is OH or CH 3 , and Acc is an electron acceptor or an electron acceptor substituted with a residue R wherein R is an organic substituent, wherein Acc is selected from the group consisting of CN, SO 2 —R′, in which R′ comprises at least one amino-substituted alkyl, an optionally substituted aryl or an optionally substituted heterocycle, and a six membered N + heterocycle with at least one alkylated N-atom in ortho- or para-position, said heterocycle selected from the group consisting of pyridinium, pyrimidinium, and chinolinium.