Phosphoramidite used to incorporate a C-5 propyne modified dC either internally or at the 5' end of an oligonucleotide.

Phosphoramidite used to incorporate a 5-methyl-modified deoxycytidine into an oligonucleotide.

Commonly used protected DNA nucleoside phosphoramidite.

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

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