Vector Laboratories is closed for the President’s Day on Monday, February 19th. We will be back in the office on Tuesday, February 20th.
We will respond to emails upon our return. Have a wonderful day.

5-Ethynyl Uridine (5-EU) (CCT-1261)



5-Ethynyl uridine (5-EU) is an alkyne-containing metabolic labeling reagent used to detect global RNA transcription temporally and spatially in both in-vitro and in-vivo with the modified nucleotide. The alkyne handler can be used for subsequent ligation to azide-containing molecules through a highly efficient click chemistry reaction.

Molecular biology grade 5-Ethynyl Uridine is HPLC purified to achieve the highest purity possible.


Unit Size10 mg, 25 mg, 100 mg, 500 mg
Molecular weight268.22
Chemical compositionC11H12N2O6
SolubilityWater, DMSO, DMF
Purity>95% (HPLC)
AppearanceOff white to grey crystalline
Storage Conditions-20°C.
Shipping ConditionsAmbient temperature

Selected References

  1. Morral, C., et al. (2020). Zonation of Ribosomal DNA Transcription Defines a Stem Cell Hierarchy in Colorectal Cancer. Cell Stem Cell.26 (6), 845-861.e12. [PubMed]
  2. Banerjee, A.K.,et al. (2020). SARS-CoV-2 disrupts splicing, translation, and protein trafficking to suppress host defenses. Cells., [doi:]

Applicable patents and legal notices are available at legal notices.

How do I Request a Quote?

To request a quote for products:

  1.  Log in to
  2.  Add the items you wish to quote to the cart;
  3.  View your cart;
  4.  Click on the “Request a Quote” button found below the items in your cart;
  5.  Download your quote