1-O-(4,4'-Dimethoxytrityl)-3-O-(N-biotinyl-3-aminopropyl)glycerol-d5 is the labeled analogue of 1-O-(4,4'-Dimethoxytrityl)-3-O-(N-biotinyl-3-aminopropyl)glycerol (D446947), which is used in the synthesis of 17-Mer oligonucleotides with units of biotinyl to be used for the detection of DNA on nitrocellulose filters.