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5,6-Epoxyeicosatrienoic acid 87173-80-6

5,6-Epoxyeicosatrienoic acid 87173-80-6

CAS No.: 87173-80-6

5,6-Epoxyeicosatrienoic acid (5,6-EET; (±)5,6-EpETrE) is a fully racemic form of the enantiomer biosynthesized from ara
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5,6-Epoxyeicosatrienoic acid (5,6-EET; (±)5,6-EpETrE) is a fully racemic form of the enantiomer biosynthesized from arachidonic acid by cytochrome P450 enzymes. In solution, 5,6-Epoxyeicosatrienoic acid is degraded to 5,6-DiHET and 5,6-δ-lactone, the latter of which can be converted to 5(6)-DiHET and quantified by GC-MS. In neuroendocrine cells, such as the anterior pituitary and pancreatic islets, 5,6-Epoxyeicosatrienoic acid is involved in calcium mobilization and hormone secretion. 5,6-Epoxyeicosatrienoic acid is an inhibitor of T-type voltage-gated calcium channels (Cav3), inhibits isoforms Cav3.1, Cav3.2 (IC50=0.54 μM), and Cav3.3, and reduces nifedipine-resistant phenylephrine-induced vasoconstriction in mouse mesenteric arteries via Cav3.2 blockade at 3 μM. In addition, it is a substrate for COX-1 and COX-2 as measured by oxygen consumption and product formation assays. (±)5,6-Epoxyeicosatrienoic acid is provided as a mixture of free acid and lactone when used at a concentration of 50 μM.

Physicochemical Properties


Molecular Formula C20H32O3
Molecular Weight 320.47
Exact Mass 320.235
CAS # 87173-80-6
PubChem CID 5283202
Appearance Colorless to light yellow liquid(Density:0.983±0.06 g/cm3)
Density 1.0±0.1 g/cm3
Boiling Point 456.7±25.0 °C at 760 mmHg
Flash Point 152.4±16.7 °C
Vapour Pressure 0.0±2.4 mmHg at 25°C
Index of Refraction 1.501
LogP 6.36
Hydrogen Bond Donor Count 1
Hydrogen Bond Acceptor Count 3
Rotatable Bond Count 14
Heavy Atom Count 23
Complexity 396
Defined Atom Stereocenter Count 0
SMILES

C([C@@H]1O[C@@H]1C/C=C\C/C=C\C/C=C\CCCCC)CCC(=O)O

InChi Key VBQNSZQZRAGRIX-QNEBEIHSSA-N
InChi Code

InChI=1S/C20H32O3/c1-2-3-4-5-6-7-8-9-10-11-12-13-15-18-19(23-18)16-14-17-20(21)22/h6-7,9-10,12-13,18-19H,2-5,8,11,14-17H2,1H3,(H,21,22)/b7-6-,10-9-,13-12-
Chemical Name

4-[3-[(2Z,5Z,8Z)-tetradeca-2,5,8-trienyl]oxiran-2-yl]butanoic acid
Synonyms

5,6-EET; (±)5,6-EpETrE
HS Tariff Code 2934.99.9001
Storage

Powder-20°C 3 years

4°C 2 years

In solvent -80°C 6 months

-20°C 1 month

Shipping Condition Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity


ADME/Pharmacokinetics Metabolism / Metabolites
5,6-EET is a known human metabolite of arachidonic acid.
References

[1]. Epoxyeicosatrienoic acids stimulate glucagon and insulin release from isolated rat pancreatic islets. Biochem. Biophys. Res. Commun. 114(2), 743-749 (1983).

Additional Infomation 5,6-EET is an EET obtained by formal epoxidation of the 5,6-double bond of arachidonic acid. It has a role as a mouse metabolite. It is a conjugate acid of a 5,6-EET(1-).
5,6-epoxy-8Z,11Z,14Z-eicosatrienoic acid has been reported in Homo sapiens with data available.

Solubility Data


Solubility (In Vitro) May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo) Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300 :Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300:Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)

Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders

Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 3.1204 mL 15.6021 mL 31.2042 mL
5 mM 0.6241 mL 3.1204 mL 6.2408 mL
10 mM 0.3120 mL 1.5602 mL 3.1204 mL
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.