The dye-modified deoxyuridine 5'-triphosphates (such as aminoallyl-dUTP) can be used to produce dye-containing DNA by conventional enzymatic incorporation methods such as reverse transcription, nick translation, random primed labelling or PCR.

• Chemically identical to Diethylaminocoumarin-5-dUTP (Perkin Elmer’s NEL455001EA)

This Coumarin-dUTP conjugate can be used as a blue fluorescence colour with Spectrum Aqua™ filter set (Spectrum Aqua™ is the trademark of Vysis).