12-epi Leukotriene B4 (C09-0878-926)

Leukotriene B4 (LTB4) compounds are produced by both enzymatic and non-enzymatic processes, where the products of enzymatic origin, via Leukotriene A4 (LTA4) hydrolase, are stereospecifically 12(R). Non-enzymatic hydrolysis products are racemic mixtures at C-12, but are nearly exclusive for trans at C-6. Thus, the non-enzymatic hydrolysis product of LTA4 is 6-trans-12-epi LTB4. 12-epi LTB4 is an isomer which would not be expected to occur in either non-enzymatic hydrolysis products, or in the enzymatic products of LTA4 hydrolase. Compared to LTB4, 12-epi LTB4 has significantly reduced affinity for the LTB4 receptor on human neutrophils (IC50 of 7.5 mM), and on guinea pig lung membranes with a (Ki of 4.7 mM), 12-epi LTB4 is an weak agonist at both the recombinant human BLT1 and BLT2 receptors, requiring approximately 10 mM for full activation of the receptor. Specification: A solution in ethanol Molecular Formula: C20H32O4 Molecular Weight: 336.5 PubChem CID: 5283130 Isomeric SMILES: CCCCC/C=C/C[C@@H](/C=C/C=C/C=C/[C@H](CCCC(=O)O)O)O Related Documents: https://ald-pub-files.oss-cn-shanghai.aliyuncs.com/aladdinsci/pdp/sds/1/E349093-SCI_3c984d362ee207485ab2f17730b4ab61.pdf