Biotin - dT phosphoramidite contains a DMT (dimethoxytrityl) group, which enables quantitative coupling. It can be inserted into the target sequence as a substitute for the dT residue. This makes it an essential tool for adding biotin to the desired positions within an oligonucleotide sequence. It complements the commonly used biotin phosphoramidite. The latter lacks the DMT group and can only be added to the 5' end of the oligonucleotide, thus bringing the synthesis process to an end.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.