D

Dexamethasone

IUPAC: (8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-3-one

C22H29FO5 Organic Compounds CAS 50-02-2
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Quick Reference
Formula / NotationC22H29FO5
CAS Number50-02-2
Molecular Weight392.5
Melting Point504 to 507 °F (NTP, 1992)
Solubilityless than 1 mg/mL at 77 °F (NTP, 1992)
AppearanceDexamethazone is an odorless white to off-white crystalline powder with a slightly bitter taste. (NTP, 1992)
Also Known As(8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-3-one; 50-02-2; Decadron; Aeroseb-Dex; Cortisumman; Calonat; Decaderm; Dexacortal; Dexacortin; Prednisolone F
CategoryOrganic Compounds

What is Dexamethasone?

Dexamethasone is a fluorinated steroid that is 9-fluoropregna-1,4-diene substituted by hydroxy groups at positions 11, 17 and 21, a methyl group at position 16 and oxo groups at positions 3 and 20. It is a synthetic member of the class of glucocorticoids. It has a role as an anti-inflammatory drug, an antineoplastic agent, a xenobiotic, an immunosuppressive agent, an adrenergic agent, an antiemetic and an environmental contaminant. It is a glucocorticoid, a 17alpha-hydroxy steroid, a 21-hydroxy steroid, an 11beta-hydroxy steroid, a 20-oxo steroid, a fluorinated steroid and a 3-oxo-Delta(1),Delta(4)-steroid. It derives from a hydride of a pregnane.

Formula & Notation

C22H29FO5

IUPAC Name: (8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-3-one

Other Names / Synonyms: (8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-3-one; 50-02-2; Decadron; Aeroseb-Dex; Cortisumman; Calonat; Decaderm; Dexacortal; Dexacortin; Prednisolone F

Properties & Characteristics

Appearance: Dexamethazone is an odorless white to off-white crystalline powder with a slightly bitter taste. (NTP, 1992). Molecular formula: C22H29FO5. Molecular weight: 392.5 g/mol. Melting point: 504 to 507 °F (NTP, 1992). Solubility: less than 1 mg/mL at 77 °F (NTP, 1992). LogP: 1.9.

Physical Data

PropertyValue
Melting Point504 to 507 °F (NTP, 1992)
Molecular Weight392.5
Solubilityless than 1 mg/mL at 77 °F (NTP, 1992)
AppearanceDexamethazone is an odorless white to off-white crystalline powder with a slightly bitter taste. (NTP, 1992)

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Dexamethasone
Formula C22H29FO5
CAS Number 50-02-2
Molecular Weight 392.5
Synonyms (8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-3-one; 50-02-2; Decadron; Aeroseb-Dex; Cortisumman; Calonat; Decaderm; Dexacortal; Dexacortin; Prednisolone F

Frequently Asked Questions

Dexamethasone is a fluorinated steroid that is 9-fluoropregna-1,4-diene substituted by hydroxy groups at positions 11, 17 and 21, a methyl group at position 16 and oxo groups at positions 3 and 20. It is a synthetic member of the class of glucocorticoids. It has a role as an anti-inflammatory drug, an antineoplastic agent, a xenobiotic, an immunosuppressive agent, an adrenergic agent, an antiemetic and an environmental contaminant. It is a glucocorticoid, a 17alpha-hydroxy steroid, a 21-hydroxy steroid, an 11beta-hydroxy steroid, a 20-oxo steroid, a fluorinated steroid and a 3-oxo-Delta(1),Delta(4)-steroid. It derives from a hydride of a pregnane.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.