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Isoprostanes are a family of prostanoid molecules of non-cyclooxygenase origin. 8-iso Prostaglandin E1 (8-iso PGE1) is an isoprostane which is found in human semen at levels of 7 µg/ml. It is a pulmonary vasoconstrictor in anesthetized dogs with a potency similar to PGF2alpha. Formal Name: 9-oxo-11alpha,15S-dihydroxy-(8beta)-prost-13E-en-1-oic acid. CAS Number: 21003-46-3. Synonyms: 8-epi PGE1, 8-iso PGE1, Ovinonic acid. Molecular Formula: C20H34O5. Formula Weight: 354.5. Purity: >98%. Formulation: A light yellow crystalline solid. Solubility: DMF: >100 mg/ml (from PGE1), DMSO: >50 mg/ml (from PGE1), Ethanol: >50 mg/ml (from PGE1), PBS pH 7.2: >1.6 mg/ml (from PGE1). SMILES: O=C1[C@@H](CCCCCCC(O)=O)[C@@H](/C=C/[C@@H](O)CCCCC)[C@H](O)C1. InChi Code: InChI=1S/C20H34O5/c1-2-3-6-9-15(21)12-13-17-16(18(22)14-19(17)23)10-7-4-5-8-11-20(24)25/h12-13,15-17,19,21,23H,2-11,14H2,1H3,(H,24,25)/b13-12+/t15-,16-,17+,19+/m0/s1. InChi Key: GMVPRGQOIOIIMI-JCPCGATGSA-N.