Modified Oligo Synthesis

For over 15 years, Bio Basic Asia Pacific has been synthesizing oligonucleotides for a variety of research applications. Our facilities are especially designed for large volume custom production, incorporating automation to ensure consistent production. Bio Basic Asia Pacific specializes in synthesizing almost all types of common modified oligos, which hence makes it one of our featured products.

At Bio Basic Asia Pacific, the quality of the modified oligo products is inspected by mass spectrometry to guarantee the accuracy and purity. Bio Basic Asia Pacific also specializes in modified oligonucleotides with a diverse range of modifications available, including Linkers, Spacers, Quenchers, Fluorophores, Modified Bases, Phosphorylation, Probes and many more. (Please refer to the resources below for the List of modifications & Guideline for Oligo Modification Selection)


* Note: An additional purification cost per oligo will be applied. The purification method for modified oligos will be HPLC only.

On average it takes about:

  • 2 business days for standard oligos (Desalt and HAP).

  • +2-3 days for PAGE or HPLC purification.

  • +1-2 days for longer oligos (longer than 60 bases)
    *Turnaround times will vary on current throughput, volumes and complexity of the order.

Upon project completion, we will provide:

  • Final modified oligo product at customer’s desired scale
  • User manual
  • Delivery report, which includes:
  1. Quality inspection report

  2. Capillary Electrophoresis report

    (Note: For HPLC_CE (IVD) products, both mass spectrometry report and capillary Electrophoresis report are available)

        • Bio Basic Asia Pacific has modified oligo synthesis process to allow a simpler and more consistent approach to this pricing structure and final yield deliverable. Because of this we guaranteed the total yield of each oligonucleotide as a FIXED final yield in OD (Optical Density) units.
        • Please take note that quotations of modified oligos only refer to the (a) modification quotation. The price of the oligos synthesis refers to (b) oligo synthesis quotation. Therefore, the total price for modified oligos synthesis would be based on (a) modification quotation + (b) oligo synthesis quotation.

        For Modified Oligo Orders, kindly provide the following information:

        1. A unique oligo name

        2. Sequence in 5′ to 3′

        3. Desired final yield (in OD)

        4. Modifications in their respective location

        For ordering or request of quote, kindly email the completed Oligo Synthesis Order Form and the above details to and we will get back to you as soon as we can.

        You may also contact us directly at +65 6954 2519 for any assistance.


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