Betamethason
Betamethason · Betametasone · betamethasone standard · C22H29O5F · Dermabet · Celestone · 17,21-trihydr · FLUBENISOLONE
Identifikatoren & physikalische Daten
| CAS No. | 378-44-9 |
|---|---|
| Summenformel | C22H29FO5 |
| Durchschnittliche Molmasse | 392,5 g/mol |
| Monoisotopische Masse | 392,19990218 g/mol |
| SMILES | CC1CC2C3CCC4=CC(=O)C=CC4(C)C3(F)C(O)CC2(C)C1(O)C(=O)CO |
| InChIKey | UREBDLICKHMUKA-UHFFFAOYSA-N |
| PubChem CID | 3003 |
| ChEBI | CHEBI:93851 |
| Lokaler Name | Betamethason |
Chemische & physikalische Eigenschaften
| XLogP | 1,9 |
|---|---|
| Polarare Oberfläche (TPSA) | 94,8 |
| H-Brücken-Donoren | 3 |
| H-Brücken-Akzeptoren | 6 |
| Frei drehbare Bindungen | 2 |
| Schwere Atome | 28 |
| Formalladung | 0 |
| Komplexität | 805 |
| Schmelzpunkt | 235-237°C |
| Siedepunkt | 568.2±50.0 °C(Predicted) |
| Dichte | 1.1283 (estimate) |
| Brechungsindex | 118 ° (C=1, Dioxane) |
| Lagerbedingungen | 0-6°C |
| Löslichkeit | Practically insoluble in water, sparingly soluble in anhydrous ethanol, very slightly soluble in methylene chloride.58mg/L(25 ºC) |
| pKa (Säurekonstante) | 12.13±0.70(Predicted) |
| Aggregatzustand | Solid |
| Farbe | White to Off-White |
| Biologische Quelle | synthetic (organic) |
| Merck | 14,1180 |
| InChIKey | UREBDLICKHMUKA-DVTGEIKXSA-N |
| SMILES | [H][C@@]12C[C@H](C)[C@](O)(C(=O)CO)[C@@]1(C)C[C@H](O)[C@@]3(F)[C@@]2([H])CCC4=CC(=O)C=C[C@]34C |
| LogP (Verteilungskoeffizient) | 2.01 at 25℃ |
| CAS Datenbank | 378-44-9(CAS DataBase Reference) |
| NIST chemische Informationen | Pregna-1,4-diene-3,20-dione, 9alpha-fluoro-11beta,17alpha,21-trihydroxy-16beta-methyl-(378-44-9) |
| EPA chemische Informationen | Pregna-1,4-diene-3,20-dione, 9-fluoro-11,17,21-trihydroxy-16-methyl-, (11.beta.,16.beta.)- (378-44-9) |
Sicherheit & Vorschriften
| Wassergefährdungsklasse (WGK) | 2 |
|---|---|
| Zollcode | 29379000 |
| RTECS-Nr. | TU4000000 |
| R-Sätze (R) | 40-48/20/21-61 |
| Toxizität | LD50 oral in mouse: > 4500mg/kg |
| Gefahrensymbole | Xi,Xn,T |
| Sicherheitshinweise (S) | 22-36-45-53 |
| Lagerklasse | 6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects |
| Gefahrstoffdaten | 378-44-9(Hazardous Substances Data) |
| Gefahrenklasse | Repr. 1BSTOT RE 2 |
Anwendungen & Verwendung
Beschreibung
Shortly after the introduction of dexamethasone, betamethasone, which differs from dexamethasone only in configuration of the 16-methyl group, was made available for the treatment of rheumatic diseases and dermatologic disorders. This analogue, which contains a 16β-methyl group, has received sufficient clinical trial examination to indicate that it is as effective as dexamethasone or, perhaps, even slightly more active. Although this drug has been reported to be less toxic than other steroids, some clinical investigators suggest that it is best used for short-term therapy.
Verwenden
Betamethasone is a glucocorticoid used as an anti-inflammatory agent.