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  Information / Help

Express Oligos

Express Oligos are now standard. It is the same price as normal oligos, no premium fees apply.

Free shipping on Express Oligos from June until August

  • Must Login BEFORE visiting the order page
  • LIMITED time only. The offer may end at any time. It is planned for three months, running from June until August
  • Must meet all Express Oligo requirements (below).
  • Cannot be combined with other items, such as standard oligos.

Express Oligos are synthesized and shipped the same day you order. Delivery time is based on the shipping method you select. Express Oligos must meet the following criteria:

SpecificationsParameters
PriceStandard Price (pay for the regular oligo and get express service)
Scales10 nmol
Length ≤40 nts
Order cut-off time5:00 pm ET, Mon-Fri only. Friday orders will be delivered the following Monday.
Shipping OptionsOvernight or 2-day shipping (choose Overnight Shipping during checkout to receive the oligo on the following day)
PurificationSalt-free
BasesStandard DNA (A, C, G or T) bases. No standard wobbles.
Modifications No modifications allowed
Location/CountryUS only

Please note that overnight delivery of these oligos is dependent on successful QC validation. Problems in QC typically result when the internal quality assessment criteria are not met; these can be sequence dependent, such as high percentage of degenerate bases, lower than expected yields, or GC-rich sequences.

To identify if your oligo qualifies as an Express Oligo, login to your account and simply type in the desired sequence in the appropriate box in the Custom DNA Oligos in Tubes order editor; a green message will appear under the name of the oligo. Please note that an order of Express Oligo(s) cannot be canceled. If any of the Express Oligo requirements are not met the expedited shipping option will not be available to you.

Custom DNA Oligos

You have three options to order custom DNA oligos: Manually enter the desired oligo(s) information, Copy & Paste the information or upload the details using the provided excel template.

Manual Entry
Step 1: Select the number of oligos you would like to order
Step 2: Provide the name of the oligo and type in the sequence. Select the other features, such the modifications at the 5′ and 3′ termini. To order sequences with internal modifications, place the cursor at the desired position of the sequence, select the internal modification and hit insert. Make appropriate purification, scale, and delivery choices before hitting add to cart.

Copy & Paste
Copy and paste the name of the oligo and the desired sequence in the field provided. Use the designators for including modifications in the sequence. Ensure that you do not use multiple delimiters in the name of the oligo.

Upload File
To order oligos using the excel upload form, please use the form provided below. Fill the relevant details in the cells of the work-sheet and upload the completely filled sheet on the Ecom site.

Ordering degenerate or wobble bases
You can order a mixture of bases at various selected positions in the sequence using the IUB codes at those positions in the sequence. When you use IUB codes for ordering degenerate bases, our synthesizer uses predefined conditions to insert equal quantities of the IUB recognized bases at the appropriate positions. No additional fee is charged when the single letter IUB code is used.

Single Letter CodeBases Represented
B =C + G + T
D =A + G + T
H =A + C + T
K =T + G
M =A + C
N =A + C + G + T
Single Letter CodeBases Represented
R =A + G
S =G + C
W =A + T
V =A + C + G
Y =C + T
 
  • Select your entry format
  • Specify your individual oligos
 

Custom DNA Oligos Entry Format



Number of oligos
 
Select the number of oligos you wish to order, more can always be added on the next page.

New: Every standard, 15–40 nt long, salt-free oligo (10 nmole Synthesis scale) ordered before 5:00 pm EST is an Express Oligo. These oligos (when <25 oligos per order) will be shipped out same day. To learn more about the Express service at the regular price, click here.

Please Note: You can now order Express Oligos at 25 nmol synthesis scale.

XLS icon
Click on the XLS icon to download and complete the upload form.
 
 
 
PLEASE NOTE:
  • Accepted file types include xls, xlsx, csv, and txt.
  • Sequence names can only be ≤17 characters long.
  • Sequences must be between 5 and 125 bases long.

New: Every standard, 15–40 nt long, salt-free oligo (10 nmole Synthesis scale) ordered before 5:00 pm EST is an Express Oligo. These oligos (when <25 oligos per order) will be shipped out same day. To learn more about the Express service at the regular price, click here.

Please Note: You can now order Express Oligos at 25 nmol synthesis scale.

 
 
Paste in the name of and sequence of your oligos in any one of the following formats, separating the name from the sequence using a delimiter, e.g.:

name1(blank)ACGTACGTACGTACGT
name2, G*T*A*TAGTAGTAG
name3; actgctgctgcc

Accepted delimiters include tab, space, colon, and semicolon. Please do not use delimiters, e.g., space, in the sequence of the DNA. Enter the sequence as a single block of DNA bases.
*Delimiters refer to a character or symbol that separates a character string, word, or data item.

New: Every standard, 15–40 nt long, salt-free oligo (10 & 25 nmole Synthesis scale) ordered before 5:00 pm ET for delivery in dry format is an Express Oligo. These oligos (when <25 oligos per order) will be shipped out same day. To learn more about the Express service at the regular price, click here.

Please Note: You can now order Express Oligos at 25 nmol synthesis scale.

 
 
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