Ambion modified nucleotides confer unique characteristics to the RNA molecules into which they are incorporated. Incorporation of an aminoallyl-modified NTP, for example, allows for the subsequent coupling of the reactive amino group to another molecule such as biotin or a Cy dye. Unlike NTPs directly coupled to a dye, aminoallyl-modified NTPs are incorporated almost as efficiently as unmodified NTPs and are much less expensive than dye-coupled NTPs.

Ambion 5-(3-Aminoallyl)-UTP (50 mM) is supplied in a single tube at 50 mM.