Adenosine 5′-triphosphate disodium salt solution

Crystalline ATP, HPLC purified, aqueous solution for RNA transcription

CAS Number:
MDL number:
PubChem Substance ID:

Quality Level




100 mM in H2O (adjusted to pH 7 with Trizma®

foreign activity

DNase, RNase, none detected

shipped in

dry ice

storage temp.


SMILES string




InChI key


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Legal Information

Trizma is a registered trademark of Sigma-Aldrich Co. LLC


12 - Non Combustible Liquids

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

  1. How does the storage temperature relate to shipping conditions?

    The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment. See Shipping and Storage for more information.

  2. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  3. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  4. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  5. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  6. Can Product A6559, Adenosine 5´-triphosphate disodium salt solution, be used in molecular biology applications?

    This is a Molecular Biology grade ATP. It is certified free of DNase and RNase. This product is recommended for any typical molecular biology application.

  7. Can this preparation of Product A6559, Adenosine 5´-triphosphate disodium salt solution, be used as an ATP standard?

    This preparation of ATP is not recommended for use as an ATP standard. The recommended ATP products for use as a standard in bioluminescence experiments is Product Code FL-AAS (preweighed vials of 1 mg each = 2 micromole).

  8. What is meant by 25UMO in the size description of Product A6559, Adenosine 5´-triphosphate disodium salt solution?  What is the product dissolved in?

    25UMO means 25 micromoles.  The 25 UMO size is equivalent to 250 μl of a 100 mM solution. This product is a 100 mM solution in water; the solution contains no buffer or salts.

  9. Can Product A6559, Adenosine 5´-triphosphate disodium salt solution, be used for in vitro transcription?

    The purity of this product should be sufficient for use in T7 RNA polymerase-catalyzed in vitro transcription assay, but we do not test the product for use in that application in our quality control process.

  10. How long can aqueous ATP solutions like Product No. A6559 be stored?

    Aqueous solutions of ATP are stable for months when frozen in solution at -15 °C and for approximately one week at 0 °C.  As with most products, we guarantee the quality of this material for 1 year when stored unopened at the recommended storage temperature (-20°C in this case).

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