Lithocholic Acid

同義語： 3α-Hydroxy-5β-cholan-24-oic acid; 5β-Cholan-24-oic acid, 3α-hydroxy-; Lithocholic acid; LCA; 17β-(1-Methyl-3-carboxypropyl)etiocholane-3α-ol

Lithocholic acid (LCA) is a secondary bile acid formed in the colon by bacterial 7α-dehydroxylation of chenodeoxycholic acid. Its structure features a 5β-cholane skeleton with a single hydroxyl group at C-3 in the α orientation and a carboxyl side chain at C-24. This monohydroxy bile acid is notable for its hydrophobicity, which drives its interactions with nuclear receptors and membrane transporters, positioning it as a key signaling molecule in gastrointestinal and metabolic research.

While often regarded as a toxic bile acid at elevated concentrations, LCA has emerged as a potent endogenous ligand for the vitamin D receptor (VDR) and the G protein-coupled bile acid receptor TGR5. These interactions link LCA to the regulation of bile acid homeostasis, lipid metabolism, and immune responses. In pharmaceutical development, LCA serves as a critical starting material for the synthesis of ursodeoxycholic acid (UDCA) and other bile acid derivatives, and as a reference standard for analytical methods.

Beyond its role as an intermediate, LCA is employed in studies of cholestasis, colon cancer, and liver disease. Its ability to modulate signaling pathways makes it a valuable tool compound for probing bile acid biology. LyvBio supplies high-purity lithocholic acid to meet the rigorous demands of research and production, ensuring consistent quality for our global clientele.

化学構造と性質

Lithocholic acid is a white crystalline solid with a molecular weight of 376.57 g/mol. It is practically insoluble in water but soluble in organic solvents such as ethanol and acetone. The compound exhibits a specific rotation of +33° to +38° in ethanol, reflecting its chiral nature. Its hydrophobic character is due to the single hydroxyl group and the planar steroid nucleus, which influence its aggregation behavior and biological activity.

作用機序

• VDR activation: LCA binds to the vitamin D receptor, inducing target gene expression involved in detoxification and calcium homeostasis.
• TGR5 agonism: Activates the G protein-coupled bile acid receptor, stimulating cAMP production and modulating energy expenditure.
• FXR antagonism: In contrast to primary bile acids, LCA does not activate farnesoid X receptor and may act as an antagonist.
• Membrane disruption: At high concentrations, LCA can permeabilize cell membranes, leading to cytotoxicity and cholestasis.

品質仕様

供給および書類

• 容量: 5 metric tons per year
• リードタイム: 3～5営業日（在庫品）
• ドキュメント: COA, MSDS, TDS available upon request
• パッケージ: 25 kg fiber drums with double polyethylene liners, or customized packaging for small quantities

見積依頼

• リブバイオ株式会社. — メールアドレス： info@lyvbio.com