53-34-9 Usage
Description
Fluprednisolone, also known as 6α-fluoro-11β,17,21-trihydroxy-pregna-1,4-diene-3,20-dione, is a 16-desmethyl analogue of paramethasone. It is an anti-inflammatory corticosteroid metabolite with glucocorticoid properties, possessing approximately 2.5 times the antirheumatic potency of prednisolone. Fluprednisolone exhibits similar activity to paramethasone and is used in various medical applications due to its potent anti-inflammatory effects.
Uses
Used in Pharmaceutical Industry:
Fluprednisolone is used as an anti-inflammatory agent for the treatment of various inflammatory conditions, such as rheumatoid arthritis, lupus, and other autoimmune diseases. Its potent anti-inflammatory and immunosuppressive properties make it an effective treatment option for these conditions.
Used in Medical Treatment:
Fluprednisolone is used as a glucocorticoid for the management of various medical conditions, including allergies, asthma, and skin disorders. Its ability to suppress the immune system and reduce inflammation makes it a valuable tool in the treatment of these conditions.
Brand Name:
Fluprednisolone is marketed under the brand name Alphadrol by Pharmacia & Upjohn. This brand name product is utilized in the pharmaceutical industry for the treatment of various inflammatory and immune-mediated conditions, taking advantage of the drug's potent anti-inflammatory and immunosuppressive properties.
Originator
Alphadrol, Upjohn ,US,1961
Manufacturing Process
5α,11β,17α-Trihydroxy-6β-Fluoro-21-Acetoxyallopregnane-3,20-Dione:A solution of 0.47 gram of 5α,11β,17α-trihydroxy-6β-fluoro-21acetoxyallopregnane-3,20-dione-3-ethylene ketal in 35 ml of acetone and 4 ml of 1 N sulfuric acid solution was gently boiled on the steam bath for 10 minutes, cooled and neutralized with dilute sodium bicarbonate solution. Addition of water and cooling gave 0.33 gram of 5α,11β,17α-trihydroxy-6βfluoro-21-acetoxyallopregnane-3,20-dione, MP 230° to 240°C.6β-Fluoro-11β,17α-Dihydroxy-21-Acetoxy-4-Pregnene-3,20-Dione(6βFluorohydrocortisone Acetate): A solution of 100 mg of 5α,11β,17α-trihydroxy6β-fluoro-21-acetoxyallopregnane-3,20-dione in 4.9 ml of acetic acid and 0.1 ml of water was refluxed for a period of 1 hour, cooled, diluted with 50 ml of water and evaporated to dryness under reduced pressure. The residue was chromatographed over Florisil (synthetic magnesium silicate) to give one fraction (77 mg) eluted with methylene chloride plus 10% acetone. Crystallization from acetone-Skellysolve B-hexanes gave 38 mg of 6β-fluoro11β,17α-dihydroxy-21-acetoxy-4pregnene-3,20-dione (6β-fluorohydrocortisone6β-Fluoro-11β,17α-Dihydroxy-21-Acetoxy-1,4-Pregnadiene-3,20-Dione: A medium consisting of 1% dextrose hydrate, 2% cornsteep liquor of 60% solids and Kalamazoo tap water was adjusted to pH 4.9 with sodium hydroxide. The medium was steam sterilized at 15 pounds pressure for 30 minutes, cooled, and then inoculated with a 24-hour growth, from spores, of Septomyxa affinis, ATCC 6737. The medium was agitated, sparged with sterile air at the rate of one-tenth volume of air per volume of medium per minute. At the end of 24 hours of fermentation at room temperature, the pH was about 7.4.To this culture there was added a solution of 6β-fluoro-11β,17α-dihydroxy-21acetoxy-4-pregnene-3,20-dione (6β-fluorohydrocortisone acetate), dissolved in diethylformamide. The solution was prepared by dissolving five parts of the steroid in 100 parts of the solid and adding about 10 cm of the solution per liter of the medium. Fermentation was continued for a period of 48 hours whereupon the mycelium and beer were extracted thoroughly with methylene chloride. The extract was washed with sodium bicarbonate solution and then with water, dried and concentrated in vacuo to a slightly viscous residue. The residue, after reacetylation with acetic anhydride in pyridine, was fractionated chromatographically and 6β-fluoro-11β,17α-dihydroxy-21-acetoxy-1,4pregnadiene-3,20-dione was recovered as a light-colored crystalline solid. Isomerization to the 6β-fluoro product is effected by streaming dry HCl into a cold chloroform/ethanol solution of the 6α-epimer.
Check Digit Verification of cas no
The CAS Registry Mumber 53-34-9 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 5 and 3 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 53-34:
(4*5)+(3*3)+(2*3)+(1*4)=39
39 % 10 = 9
So 53-34-9 is a valid CAS Registry Number.
InChI:InChI=1/C21H27FO5/c1-19-5-3-11(24)7-14(19)15(22)8-12-13-4-6-21(27,17(26)10-23)20(13,2)9-16(25)18(12)19/h3,5,7,12-13,15-16,18,23,25,27H,4,6,8-10H2,1-2H3/t12-,13-,15-,16-,18+,19-,20-,21-/m0/s1
53-34-9Relevant articles and documents
Method for reducing or preventing transplant rejection in the eye and intraocular implants for use therefor
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, (2008/06/13)
Methods for reducing or preventing transplant rejection in the eye of an individual are described, comprising: a) performing an ocular transplant procedure; and b) implanting in the eye a bioerodible drug delivery system comprising an immunosuppressive agent and a bioerodible polymer.
Amine containing ester prodrugs of corticosteroids
-
, (2008/06/13)
Novel solution stable ester prodrugs of corticosteroids of the formula STR1
Sulfonate containing ester prodrugs of corticosteroids
-
, (2008/06/13)
Novel solution stable ester prodrugs of corticosteroids of the formula STR1 and their salts.
