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Leukotriene E4-d5 (LTE4-d5) contains five deuterium atoms at the 19, 19′, 20, 20 and 20 positions. It is intended for use as an internal standard for the quantification of LTE4 by GC- or LC-mass spectrometry. LTE4 is produced by the action of dipeptidase on LTD4, leaving only the cysteinyl group still attached to the fatty acid backbone.{2236} It is one of the constituents of slow-reacting substance of anaphylaxis (SRS-A).{394} LTE4 is considerably less active (8 to 12-fold) than LTC4 in the biological activities characteristic of cysteinyl leukotrienes.{2236,396} Unlike LTC4 and LTD4, LTE4 accumulates in both plasma and urine. Therefore, urinary excretion of LTE4 is most often used as an indicator of asthma.{1815,865,2064} In humans, basal levels of LTE4 range from 1-100 pg/mg creatinine. In asthmatic patients, urinary LTE4 levels increase to 80-1,000 pg/mg creatinine.{865}
Territorial Availability: Available through Bertin Technologies only in France
| Size | 100 µg, 25 µg, 50 µg |
|---|---|
| Shipping | dry ice |
| CAS number | 1240398-14-4 |
| Molecular formula | C23H32D5NO5S |
| Smiles | O[C@H](CCCC(O)=O)[C@H](SC[C@H](N)C(O)=O)/C=C/C=C/C=CC/C=CCCCC([2H])([2H])C([2H])([2H])[2H], O[C@H](CCCC(O)=O)[C@H](SC[C@H](N)C(O)=O)/C=C/C=C/C=CC/C=CCCCC([2H])([2H])C([2H])([2H])[2H], O[C@H](CCCC(O)=O)[C@H](SC[C@H](N)C(O)=O)/C=C/C=C/C=CC/C=CCCCC([2H])([2H])C([2H])([2H])[2H] |
| Molecular weight | 444,6 |
| Custom code | 3822.19 |
| Formulation | A solution in ethanol |
| Purity | ≥99% deuterated forms (d1-d5) |
| UNSPSC code | 12352100 |
Cayman Chemical’s mission is to help make research possible by supplying scientists worldwide with the basic research tools necessary for advancing human and animal health. Our utmost commitment to healthcare researchers is to offer the highest quality products with an affordable pricing policy.
Our scientists are experts in the synthesis, purification, and characterization of biochemicals ranging from small drug-like heterocycles to complex biolipids, fatty acids, and many others. We are also highly skilled in all aspects of assay and antibody development, protein expression, crystallization, and structure determination.
Over the past thirty years, Cayman developed a deep knowledge base in lipid biochemistry, including research involving the arachidonic acid cascade, inositol phosphates, and cannabinoids. This knowledge enabled the production of reagents of exceptional quality for cancer, oxidative injury, epigenetics, neuroscience, inflammation, metabolism, and many additional lines of research.
Our organic and analytical chemists specialize in the rapid development of manufacturing processes and analytical methods to carry out clinical and commercial GMP-API production. Pre-clinical drug discovery efforts are currently underway in the areas of bone restoration and repair, muscular dystrophy, oncology, and inflammation. A separate group of Ph.D.-level scientists are dedicated to offering Hit-to-Lead Discovery and Profiling Services for epigenetic targets. Our knowledgeable chemists can be contracted to perform complete sample analysis for analytes measured by the majority of our assays. We also offer a wide range of analytical services using LC-MS/MS, HPLC, GC, and many other techniques.
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Cayman is a leader in the field of emerging drugs of abuse, providing high-purity Schedule I-V Controlled Substances to federally-licensed laboratories and qualified academic research institutions for forensic analyses. We are certified by ACLASS Accreditation Services with dual accreditation to ISO/IEC 17025:2005 and ISO Guide 34:2009.
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