Phosphoramidite for incorporation of an (otherwise unmodified) reverse (5’ to 3’) dT nucleobase within an oligonucleotide.

Phosphoramidite used to incorporate a deoxyguanosine into an oligonucleotide, with a methylated backbone.

Phosphoramidite used to incorporate a deoxythymidine into an oligonucleotide, with a methylated backbone.

Phosphoramidite for the efficient incorporation of a 3'-thioinosine modification into oligonucleotides.

Phosphoramidite used to incorporate a deoxyuridine base into an oligonucleotide.