Bio-Synthesis provide dual biotin modified oligonucleotide. Dual biotin can be incorporate at 5' or 3' end of an oligonucleotide result in two functional biotin groups which act to increase binding affinity of biotin-streptavidin. This is especially useful when immobilize the biotin-labelled DNA/RNA target sequence on the beads and incubate with the cell extract. Dual biotin labelled oligo keep biotinylated DNA/primers on the beads during heating after higher temperatures. Study have shown dual biotin prevents or effectively reduces leakage of biotinylated DNA from beads during heating1. Dual biotin modified oligo are often used for application such as serial analysis of gene expression (SAGE) assays. Contact Bio-Synthesis for Dual Biotin Oligonucleotide Modification Service.

Product Information


Product Name:

Dual Biotin Oligonucleotide Modification


attachement chemistry, cross linking, affinity purification

Modification Code:


Chemical Formula:


Exact Mass:


Formula Weight:



874.28 (100.0%), 875.28 (37.4$), 876.28 (10.2%), 876.27 (9.1%), 877.28 (4.6^), 875 (2.2%)

Elemental Analysis:

C, 43.93; H, 6.45; N, 9.61; O, 25.60; P, 7.08; S. 7.33


Bio-Synthesis Inc. Oligo Structure


Required HPLC purification

Delivery Format:


Shipping Conditions:

Room Temperature

Storage Conditions:

-20°C To -70°C
Oligonucleotides are stable in solution at 4°C for up to 2 weeks. Properly reconstituted material stored at -20°C should be stable for at least 6 months. Dried DNA (when kept at -20°C) in a nuclease-free environment should be stable for years.



  1. Dressman D et al (2003) Transforming single DNA molecules into fluorescent magnetic particles for detection and enumeration of genetic variations. PNAS Vol 100, no. 15 8817-8822.