Cayman Chemical Item Number 90030

20-hydroxy Arachidonic Acid (CAS 79551-86-3)

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20-HETE is a cytochrome P450 (CYP450) metabolite postulated to play an autacoid role in the renal and cerebral vasculature.1 In rat cerebral microvessels, 20-HETE is a vasoconstrictor that mediates pressure-induced autoregulatory vasoconstriction.2 20-HETE is excreted mainly as the glucuronide conjugate. The concentration of free 20-HETE (20-40 pg/ml in human urine) is about 10-fold lower than the corresponding concentration of the 20-glucuronide.3 20-HETE can be further metabolized by cyclooxygenase to 20-hydroxy PGG2 and 20-hydroxy PGH2.4

1. McGiff, J.C., and Quilley, J. 20-HETE and the kidney: Resolution of old problems and new beginnings. Am J Physiol 277 R607-R623 (1999).

2. Gebremedhin, D., Lange, A.R., Lowry, T.F., et al. Production of 20-HETE and its role in autoregulation of cerebral blood flow. Circ Res 87 60-65 (2000).

3. Prakash, C., Zhang, J.Y., Falck, J.R., et al. 20-Hydroxyeicosatetraenoic acid is excreted as a glucuronide conjugate in human urine. Biochem Biophys Res Commun 185 728-733 (1992).

4. Schwartzman, M.L., Falck, J.R., Yadagiri, P., et al. Metabolism of 20-hydroxyeicosatetraenoic acid by cyclooxygenase. Formation and identification of novel endothelium-dependent vasoconstrictor metabolites. J Biol Chem 264 11658-11662 (1989).

  • 20-hydroxy Arachidonic Acid
Formal Name 20-​hydroxy-​5Z,​8Z,​11Z,​14Z-​eicosatetraenoic acid
CAS Number 79551-86-3
Molecular Formula C20H32O3
Formula Weight 320.5
Formulation A solution in ethanol
Purity ≥98%
Stability 1 year
Storage -20°C
Shipping Wet ice in continental US; may vary elsewhere
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20-HETE is available in the following screening library:

Size Price Quantity Subtotal
25 µg $120.00 $0.00
50 µg $228.00 $0.00
100 µg $432.00 $0.00
500 µg $1,920.00 $0.00
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Cart Total $0.00

Pricing updated 2015-08-05. Prices are subject to change without notice.

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Cayman Chemical Company regularly evaluates our shipping methods to ensure product stability is maintained and our corporate environmental impact is minimized. Products selected for review are evaluated and shipping methods are certified by our Scientists. While occasionally our method of shipping a product may change, rest assured the shipping conditions on all Cayman Chemical products have been reviewed and validated.

Upon receipt, it is important to check the storage requirements of your products and place them at the appropriate temperature. Products shipped without ice may require frozen storage for long term stability.

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