ethyl (5Z,8Z,11Z,14Z,17E)-icosa-5,8,11,14,17-pentaenoate
CAS 125827-48-7
Cat. no. C4X-28903 Formula C22H34O2
MW 330.50
In stock
Geometric isomers of omega-3 fatty acid esters are a recognised category of related substance in eicosapentaenoic acid products, and ethyl (5Z,8Z,11Z,14Z,17E)-icosa-5,8,11,14,17-pentaenoate is the trans-17 isomer of the ethyl ester of eicosapentaenoic acid. Because the cis and trans forms differ only in the geometry of one double bond, chromatographic separation is demanding, and a characterised isomer standard is the practical way to confirm identity and elution order. Laboratories use it for method development and validation of fatty acid ester purity methods, for peak identification in lipid profiling by GC or LC, and for calibration when the isomer must be quantified alongside the parent ester. The compound is a colourless liquid with the formula C22H34O2 and a molecular weight of 330.50. Storage at -80°C ± 5°C is specified, and shipments are arranged with dry ice. Listed pack sizes range from 5 mg up to 1 g. Request a quote or the accompanying documentation.
Also known as
Ethyl (5Z,8Z,11Z,14Z,17E)-5,8,11,14,17-eicosapentaenoate; ethyl (5Z,8Z,11Z,14Z,17E)-icosa-5,8,11,14,17-pentaenoate; 5,8,11,14,17-Eicosapentaenoic acid, ethyl ester, (E,Z,Z,Z,Z); 5,8,11,14,17-Eicosapentaenoic acid, ethyl ester, (5Z,8Z,11Z,14Z,17E). Further pharmacopoeial and trivial names are recorded on the certificate of analysis.
Pack sizes and lead time
| Pack size | Availability | Quote |
|---|---|---|
| 1 g | 90 days | |
| 5 mg | In stock | |
| 10 mg | In stock | |
| 15 mg | In stock | |
| 20 mg | 10 days | |
| 25 mg | 10 days | |
| 30 mg | 10 days | |
| 50 mg | 10 days | |
| 70 mg | 10 days | |
| 80 mg | 10 days | |
| 85 mg | 10 days | |
| 100 mg | 10 days | |
| 175 mg | 10 days | |
| 200 mg | 10 days | |
| 250 mg | 10 days | |
| 280 mg | 10 days | |
| 300 mg | 10 days | |
| 350 mg | 35 days | |
| 360 mg | 35 days | |
| 400 mg | 35 days | |
| 500 mg | 35 days |
Content and purity for each pack size are stated per lot on the certificate of
analysis. Prices are quoted per enquiry so that pack size, documentation and shipping requirements
can be confirmed together — no price is published on this site.
What the documents contain
- Certificate of analysis — issued per lot: catalogue and lot number, the value assigned to the material and the analytical basis for it.
- Safety data sheet — supplied for the catalogue item, and the basis for the transport classification used on the shipment.
- Storage and shipping conditions for this item: -80±5℃, Shipping with Dry Ice.
Frequently asked questions
Is a certificate of analysis (COA) available for ethyl (5Z,8Z,11Z,14Z,17E)-icosa-5,8,11,14,17-pentaenoate?
Yes. A batch-specific COA and the MSDS are issued for every lot of ethyl (5Z,8Z,11Z,14Z,17E)-icosa-5,8,11,14,17-pentaenoate (catalogue number C4X-28903). Use the COA link on this page, or email chao.lu@cato-chem.com with the lot number printed on your label and we will send the matching document.
What pack sizes and lead times are offered?
Pack sizes 5 mg, 10 mg, 15 mg are held in stock and typically ship within 1–2 working days Other sizes (1 g, 20 mg, 25 mg, 30 mg, 50 mg, 70 mg, 80 mg, 85 mg, 100 mg, 175 mg, 200 mg, 250 mg, 280 mg, 300 mg, 350 mg, 360 mg, 400 mg, 500 mg) are quoted with a lead time of approximately 90 days, 10 days, 35 days.
How is the purity of ethyl (5Z,8Z,11Z,14Z,17E)-icosa-5,8,11,14,17-pentaenoate documented?
Purity is determined per batch and stated on the COA together with the analytical data used for its assignment. If your method requires a specific grade or a particular pharmacopoeial naming, tell us the requirement when you enquire and we will confirm suitability.
Can you supply a larger quantity or a custom synthesis?
Yes. Quantities above the listed pack sizes are quoted on request, and custom synthesis or isolation from related starting materials can be discussed for compounds not held in stock. Contact chao.lu@cato-chem.com with the target quantity and required delivery date.
How is ethyl (5Z,8Z,11Z,14Z,17E)-icosa-5,8,11,14,17-pentaenoate shipped?
Shipping conditions for this item: Shipping with Dry Ice. Shipments are packed to maintain the specified storage condition, and the SDS is provided for transport classification.
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Same molecular formula (C22H34O2)
