Ursodeoxycholic acid

English Name: ursodeoxycholic acid

CAS No.: 128-13-2

Molecular formula: C24H40O4

Molecular weight: 392.57

EINECS No.: 204-879-3

Melting point: 203-204 ° C (lit.)

Specific rotation: 60 º (C = 2, EtOH)

Boiling point: 437.26 ° C (rough estimate)

Density: 0.9985 (rough estimate)

Refractive index: 60.5 ° (C = 2, EtOH)

Flash point: 9 ℃

Usage: Gallstone dissolving medicine. It is mainly used for cholesterol gallstones that are not suitable for surgical treatment, especially the floating cholesterol stones with normal gallbladder function, stone diameter less than 15mm, X-ray transmission and non calcification have a high cure rate. It also has a certain therapeutic effect on toxic hepatitis, cholecystitis, primary sclerosing cholangitis and primary cholestatic cirrhosis. increase α- Efficacy of interferon in the treatment of chronic hepatitis C. Diarrhea, constipation, allergic reaction, pruritus, headache, dizziness, stomach pain, pancreatitis and bradycardia are rare. Pregnant women and those with severe biliary obstruction should not be used.

Properties

Ursodeoxycholic acid is a chemical preparation of natural bile acid isolated from bear bile juice. It is a stereoisomer of chenodeoxycholic acid. Its litholytic effect and curative effect are similar to chenodeoxycholic acid, but the course of treatment is short and the dosage is small. It is a kind of hydrophilic cholic acid and a kind of cholesterol stone dissolving agent. It can reduce the secretion of cholesterol by liver, reduce the saturation of cholesterol in bile, promote the secretion of bile acid, increase the solubility of cholesterol in bile, dissolve cholesterol stones or prevent the formation of stones. It can increase the amount of bile secretion, relax the sphincter of bile duct mouth, produce cholagogic effect, which is conducive to the discharge of stones. This product can not dissolve other types of gallstones. Ursodeoxycholic acid is suitable for the treatment of cholesterol gallstones, hyperlipidemia, bile secretion disorders, primary biliary cirrhosis, chronic hepatitis, bile reflux gastritis and prevention of acute rejection and reaction of liver transplantation. The stone dissolving effect of this product is slightly weaker than that of chenodeoxycholic acid.

CAS No.

128-13-2

Formula

C24H40O4

Molecular Mass

392.57200

Exact Mass

392.29300

PSA

77.76000

Logp

4.47790

IUPAC

(4R)-4-[(3R,5S,7S,8R,9S,10S,13R,14S,17R)-3,7-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid

Matter Classification

organic

Category

Melting Point

203-206ºC

Density

1.128 g/cm3

Boiling Point

547.1ºC

Flash Point

298.8ºC

Appearance