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Cayman is a manufacturer, supplier, and vendor of biochemical reagents, assay kits, forensic chemistry standards, antibodies, and proteins for scientific research. Analytical testing services and custom synthesis are also available.

Cayman Chemical Company · 1180 East Ellsworth Road · Ann Arbor, Michigan 48108 · USA

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Stearidonic Acid ethyl ester

Cayman Chemical Item Number 10006856

Ethyl Stearidonate; Moroctic Acid ethyl ester (CAS 119798-44-6)

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Stearidonic acid (18:4ω-3) is a rare polyunsaturated fatty acid of the ω-3 series. In normal humans, it represents less than 0.25% of serum phospholipid fatty acids.1 It is present in certain natural oils such as echium and black currant seed, and to the extent that these oils are incorporated into nutraceuticals, stearidonic acid can become a significant polyunsaturate in the human diet. Stearidonic acid ethyl ester is an ester version of the free acid that is less water soluble, but more amenable for the formulation of stearidonate-containing diets and dietary supplements.

1. Holman, R.T. Control of polyunsaturated acids in tissue lipids. J Am Coll Cardiol 5 183-211 (1986).

  • Ethyl Stearidonate
  • Moroctic Acid ethyl ester
Formal Name 6Z,​9Z,​12Z,​15Z-​octadecatetraenoic acid,​ ethyl ester
CAS Number 119798-44-6
Molecular Formula C20H32O2
Formula Weight 304.5
Formulation A solution in ethanol
Purity >98%
Stability 1 year
Storage -20°C
Shipping Room temperature in continental US; may vary elsewhere
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Stearidonic Acid ethyl ester is available in the following screening library:

Size Price Quantity Subtotal
1 mg $69.00 $0.00
5 mg $311.00 $0.00
10 mg $552.00 $0.00
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Cart Total $0.00

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Pricing updated 2015-02-27. Prices are subject to change without notice.

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Related Products

Stearidonic Acid
Stearidonic Acid methyl ester


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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.

Cayman Chemical was formed over thirty years ago by demonstrating the value of naturally growing gorgonian corals as a renewable, economically viable source of prostaglandins. Today we operate our business knowing that we owe our start to the renewable resources our environment had provided. As Cayman Chemical continues to grow we consistently evaluate our business processes to ensure we are operating at the highest environmental standards.

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