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3-hydroxy Stearic acid is a long-chain saturated fatty acid and intermediate in the production of 3-hydroxy octadecanedioic acid from stearic acid . 3-hydroxy Stearic acid is found in C. pyloridis, a bacteria implicated in the etiology of peptic ulcers. [Matreya, LLC. Catalog No. 1743]

rac-3-Hydroxyoctadecanoic acid is a fatty acid found in foodstuffs such as vegetable oils, milk, and dairy products. rac-3-Hydroxyoctadecanoic acid is also used as a chemical marker to identify and confirm the presence of Campylobacter pylori, a gram-negative bacteria that cause duodenal ulcers in humans.

ChEBI: 3-hydroxyoctadecanoic acid is a 3-hydroxy monocarboxylic acid and a hydroxyoctadecanoic acid. It is a conjugate acid of a 3-hydroxyoctadecanoate.

[1] MADHURIMA DHAR. Omega oxidation of 3-hydroxy fatty acids by the human CYP4F gene subfamily enzyme CYP4F11.[J]. Journal of Lipid Research, 2008: 612-624. DOI: 10.1194/jlr.m700450-jlr200
[2] M A LAMBERT. Differentiation of Campylobacter and Campylobacter-like organisms by cellular fatty acid composition.[J]. Journal of Clinical Microbiology, 1987, 25 4: 706-713. DOI: 10.1128/jcm.25.4.706-713.1987