Certain features of will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Same Day Custom Oligos

Order today and receive your oligos tomorrow!*

  • Shipped same day for orders received before 12:00 PM CST
  • 100% Mass Spec QC on all oligos

Same Day Oligo Specifications:

Scales of Synthesis 0.025 and 0.05 µmol
Format Dry in 2 mL screw cap tubes
Length 40 bases or less
Purification Desalted
Bases DNA (A, C, G or T) and degenerate bases**
Modifications Not allowed
Backbone Phosphodiester bond
Documentation All Oligos are delivered with Quality Assurance document including yields, Tm (melting temperature), MW, and µg/OD
Quality Control Every oligo is quality checked by mass spectrometry
Shipping Schedule Shipped same day for orders received before 12:00 PM CST

*Pending successful QC validation.
**Oligos containing a high percentage of degenerate bases could be delayed due to the additional time required for QC.

Ordering: Qualifying orders placed before 12:00 PM CST will automatically receive the expedited synthesis service.  No additional order comments or special notes are required when placing your orders online.

Valid in the US and Canada.

To order, visit:

For more information, contact your Sigma Representative at:
Phone: (800) 234-5362