For research use only.

Catalog No.S1888 Synonyms: MDL 458

1 publication

Deflazacort  Chemical Structure

CAS No. 14484-47-0

Deflazacort (MDL 458) is a glucocorticoid used as an anti-inflammatory and immunosuppressant.

Selleck's Deflazacort has been cited by 1 publication

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Biological Activity

Description Deflazacort (MDL 458) is a glucocorticoid used as an anti-inflammatory and immunosuppressant.
Glucocorticoid receptor [1]
In vivo Deflazacort results in a significant and equal decrease of thymus weight, indicating a marked reduction in total immunogenic tissue in rats. [1] Deflazacort reduces thymus weight and Daily weight gain in rats. Deflazacort lowers liver IFG-I and GHR mRNA in rats. [2] Deflazacort (DFC) is a heterocyclic glucocorticoid with anti-inflammatory activity but with decreased side effects. Deflazacort and [3H]dexamethasone (DEX) similarly induce in vivo ornithine decarboxylase activity in hippocampus and liver, although body weight loss after chronic treatment is significantly less for DFC. [3] Deflazacort induces dose-dependent decreases in osteocalcin (OC) plasma production rate (PPR). Deflazacort and prednisolone increase both postabsorptive plasma glucose and plasma calcium levels in sheep, but there are no significant differences between their effects. [4] Deflazacort, especially combined with L-arginine, spares quadriceps muscle from injury-induced regeneration (myf5 expression) compared with placebo treatment, despite an increase in membrane permeability immediately after exercise. Deflazacort alone prevents the typical progressive loss of function (measured as voluntary distance run over 24 hours) that is observed 3 months later in placebo-treated mice. [5] Deflazacort causes a less significant alteration in the pattern of GH secretion and does not negatively affect the overall amount of GH secreted. [6]


Solubility (25°C)

In vitro DMSO 88 mg/mL (199.31 mM)
Ethanol 12 mg/mL (27.17 mM)
Water Insoluble

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Chemical Information

Molecular Weight 441.52


CAS No. 14484-47-0
Storage powder
in solvent
Synonyms MDL 458
Smiles CC1=NC2(C(O1)CC3C2(CC(C4C3CCC5=CC(=O)C=CC45C)O)C)C(=O)COC(=O)C

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Clinical Trial Information

NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT04791345 Recruiting Drug: Methylprednisone|Drug: Deflazacort|Drug: Dexamethasone Healthy Volunteers Parc de Salut Mar February 26 2021 Phase 1
NCT03783923 Completed Drug: Deflazacort Limb-Girdle Muscular Dystrophy PTC Therapeutics May 15 2019 Phase 3
NCT03642145 Withdrawn Drug: Deflazacort Duchenne Muscular Dystrophy PTC Therapeutics October 31 2018 Phase 3
NCT02251600 Completed Drug: Deflazacort Duchenne Muscular Dystrophy PTC Therapeutics December 2014 Phase 1
NCT02286622 Completed Drug: Deflazacort Renal Impairment PTC Therapeutics December 2014 Phase 1

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