Paramethasone
Title: Paramethasone
CAS Registry Number: 53-33-8
CAS Name: (6a,11b,16a)-6-Fluoro-11,17,21-trihydroxy-16-methylpregna-1,4-diene-3,20-dione
Additional Names: 6a-fluoro-16a-methylprednisolone; 16a-methyl-6a-fluoroprednisolone
Molecular Formula: C22H29FO5
Molecular Weight: 392.46
Percent Composition: C 67.33%, H 7.45%, F 4.84%, O 20.38%
Literature References: Prepn: Edwards et al., J. Am. Chem. Soc. 82, 2318 (1960). Toxicity study: E. I. Goldenthal, Toxicol. Appl. Pharmacol. 18, 185 (1971).
 
Derivative Type: 21-Acetate
CAS Registry Number: 1597-82-6
Trademarks: Cortidene (Syntex Latino); Dilar (Cassenne); Dillar (Sarva-Syntex); Haldrate (Lilly); Haldrone (Lilly); Metilar (Syntex); Monocortin (Grñenthal); Paramezone (Recordati); Syntecort (Medicamenta); Stemex (Syntex)
Molecular Formula: C24H31FO6
Molecular Weight: 434.50
Percent Composition: C 66.34%, H 7.19%, F 4.37%, O 22.09%
Properties: mp 228-241° (dec). [a]D +85°. uv max (ethanol): 243 nm (log e 4.16). Sol in ethanol, acetone; slightly sol in water. LD50 i.p. in female rats: 392±23 mg/kg (Goldenthal).
Melting point: mp 228-241° (dec)
Optical Rotation: [a]D +85°
Absorption maximum: uv max (ethanol): 243 nm (log e 4.16)
Toxicity data: LD50 i.p. in female rats: 392±23 mg/kg (Goldenthal)
 
Derivative Type: Disodium phosphate
Trademarks: Soludillar (Syntex)
 
Derivative Type: Mixture of 21-acetate and disodium phosphate
Trademarks: Triniol (Syntex)
 
Therap-Cat: Glucocorticoid.
Keywords: Glucocorticoid.

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