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PRODUCT DATA SHEET Hexadecenoic acid ( cis -6) Catalog No: 1243 Molecular Formula: C 16 H30 O2 Common Name: Sapienic acid; C16:1 ( cis -6) Molecular Weight: 254 Fatty acid Storage: -20 °C Source: synthetic Purity: TLC 99%, GC > 99%; Solubility: ethanol, methanol, chloroform, identity confirmed by MS ethyl ether TLC System: hexane/ethyl ether/acetic acid CAS No: 17004-51-2 (80:20:1 by volume) Appearance: liquid HO O Application Notes: Hexadecenoic acid ( cis -6) is an unusual unsaturated fatty acid that is the major constituent of human sebaceous lipids, from which it derives its common name sapienic acid, where it is involved in self-sterilization and atopic dermatitis amelioration. 1 Among all hair-bearing animals, humans are the only ones to produce this fatty acid and it is not found in any organ other than the skin. 2 It is formed from palmitic acid by the action of the enzyme delta -desaturase (or fatty acid desaturase-2). 3 hexadecenoic acid ( cis -6) can then be converted to sebaleic acid (C18:2 delta -5,8), another fatty acid unique to sebum, by the extension of two carbons and the addition of a double bond. 4 It has been found that hexadecenoic acid ( cis -6) has powerful antibacterial properties although the mechanisms have not been fully explored. Besides being found in human skin hexadecenoic acid ( cis -6) has been found in some marine organisms and in some seed oils. Selected References: 1. D. Downing et al. “Essential fatty acids and acne” Journal of the American Academy of Dermatology, Vol. 14:2 pp. 221-225, 1986 2. N. Nicolaides “Skin Lipids: Their Biochemical Uniqueness” Science , Vol. 186:4 pp. 19-26, 1974 3. L. Ge et al. “Identification of the delta -6 Desaturase of Human Sebaceous Glands: Expression and Enzyme Activity” Journal of Investigative Dermatology , Vol. 120 pp. 707-714, 2003 4. M. Ottaviani, E. Camera, and M. Picardo “Lipid Mediators in Acne” Mediators of Inflammation , Vol. 2010 pp. 1-6, 2010 This product is to be used for research only. It is not intended for drug or diagnostic use, human consumption or to be used in food or food additives. Matreya assumes no liability for any use of this product by the end user. We believe the information, offered in good faith, is accurate. DS1243 Rev. #8 March 8, 2017 .

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