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

Phosphoramidite used to incorporate a deoxyadenosine into an oligonucleotide, with an ethylated backbone.

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 incorporation of a locked nucleic acid C analogue internally or at the 5' end of an oligonucleotide.