Custom Oligos You will be sent an instant confirmation after we receive your Quote Request.  Please contact us here or by telephone (503.682.1814 or 800.888.2358 ) for ordering assistance or questions regarding your order. You may request a quote or pricing using the Request A Quote button.

Order Form Directions

Fill out the requested information here and follow the prompts.

Notes about Sequence Entry:

  1. Type the sequence in triplets from the 5' end to the 3' end (left Custom Oligosto right).  Capitalize A, C, and T and type G in lower case (g), except for chimeric oligos where capital and lowercase letters may be used to indicate the different chemistries. 

  2. "I" is inosine. "U" or "(dU)" is considered to be deoxy Uridine in a DNA  sequence, and "U" or "(rU)" is considered to be ribose U in an RNA sequence, unless otherwise specified. 

  3. Use the one-letter code for redundancies from the IUB table below.


    IUB codes for oligos containing mixed sites

    M = (A,C) S = (g,C)
    V = (A,g,C)
    R = (A,g)
    Y = (C,T)
    H = (A,C,T)
    W = (A,T)
    K = (g,T)
    D = (A,g,T)
    N = (A,g,C,T)
    B = (g,C,T)

    Examples of a 17-mer oligonucleotide with a degenerate:

    • 5' gAT CAT ggg TgC AA(N) CC 3'

    • 5' gAT / CAT / ggg / TgC / AA(N) / CC 3'


    Review the order to ensure that the entered information is accurate.  Select "Submit Order" to initiate the purchase.

Other Information Specific to Orders


There is no set-up charge.

Product and process development for gram-scale manufacturing is available (i.e., experimental studies at the smaller scale to analyze coupling efficiencies and define process controls prior to scale-up). Inquire about pricing for larger scales, RNA, and chimeras.

Please inquire for costs of available dyes, tags, and modifiers.  Available dyes, tags, and modifiers that are not in stock may require a longer turnaround time.

Payment Information

All prices are quoted in US dollars and are subject to change without notice.  International orders must be paid on a US bank in US dollars. We will accept payment by checks encoded by a US bank only.  Customers will be billed for the $35.00 processing fee charged by US banks for overseas checks not encoded by a US bank. We require institutions in some countries to pay in advance of manufacturing their order.  Customer Service will notify you if this prepayment requirement applies to you.

We accept payment by MasterCard, Visa, American Express, UNESCO coupons (for an additional charge of 5%), postal money orders, and wire transfers.  Please note there will be a $25.00 (US) pass-through fee included for any wire transfer.  Please call for the necessary transfer information.

Shipping and Invoicing

We ship all US orders by Federal Express unless otherwise specified.  Shipping charges for domestic orders are approximately $20.00 - $30.00, and international orders will be determined at time of shipment, depending on the country.  Shipping costs may be charged directly to your FedEx account.

Freight costs will be pre-paid and added to the cost of the order.

We hold orders for multiple oligonucleotides until all are manufactured unless you request that they are shipped as they are completed.

An invoice is generated per shipment.



What you receive with your completed order:

Sequence Analysis Report (SAR)

  1. Total A260 value and Molecular Weight
  2. Prime to Target Tm  (melting temperature)
  3. Possible stem loop structure (hairpin) and its stability (loop Tm)
  4. Homodimer binding (duplex stability and tendency to form dimers)

A PAGE gel photograph is included with every oligonucleotide receiving gel purification on all but 50nmol oligo.

Analysis Options:

  1. Strong Anion Exchange HPLC
  2. Capillary Electrophoresis
  3. Tm Determination with RNA or DNA Targets 

OligoTech Analysis Program

Oligos Etc.'s OligoTech software program allows you to input your sequence and have it analyzed before ordering to learn the following information:

  1. Tm (melting temperature)
  2. Possible stem loop structure (hairpin) and its stability (loop Tm)
  3. Homodimer binding (duplex stability and tendency to form dimers)