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Home > All categories> Biochemicals and Pharmaceutical Chemicals> Pharmaceutical Impurities> 21-acetoxy-9,11β-epoxy-17-hydroxy-9β-pregna-1,4-diene-3,20-dione
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21-acetoxy-9,11β-epoxy-17-hydroxy-9β-pregna-1,4-diene-3,20-dione

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Origin: China

Cas No: 38680-83-0

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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  • Products Specification
  • Product Description

  • Property

    CAS No.: 38680-83-0 Formula: C23H28O6 Molecular Weight: 400.46500

    Basic Info

    Chemical Name 21-acetoxy-9,11β-epoxy-17-hydroxy-9β-pregna-1,4-diene-3,20-dione
    Synonyms

    9beta,11beta-Epoxy-17,21-dihydroxypregna-1,4-diene-3,20-dione 21-acetate;

    CAS No. 38680-83-0
    Molecular Formula C23H28O6
    Molecular Weight 400.46500
    PSA 93.20000
    LogP 2.28890

    Properties

    Density 1.32
    Boiling Point 572.7ºC at 760 mmHg
    Flash Point 197.8ºC
    Refractive Index 1.599

    Synthesis Route

    pregna-1,4,9(11)-triene-17α,21-diol-3,20-dione 21-acetate→21-acetoxy-9,11β-epoxy-17-hydroxy-9β-pregna-1,4-diene-3,20-dione
    9α-Brom-11β,17α-dihydroxy-21-acetoxy-pregna-1,4-dien-3,20-dion→21-acetoxy-9,11β-epoxy-17-hydroxy-9β-pregna-1,4-diene-3,20-dione
    21-acetoxy-9-bromo-11β-formyloxy-17-hydroxy-pregna-1,4-diene-3,20-dione→21-acetoxy-9,11β-epoxy-17-hydroxy-9β-pregna-1,4-diene-3,20-dione

    Precursor

    21-Acetoxy-9α-brom-11β-trifluoracetoxy-17α-hydroxy-pregna-1,4-dien-3,20-dion
    pregna-1,4,9(11)-triene-17α,21-diol-3,20-dione 21-acetate
    9α-Brom-11β,17α-dihydroxy-21-acetoxy-pregna-1,4-dien-3,20-dion
    Prednisolone Acetate

    Downstream Product

    Isoflupredone Acetate
    Isoflupredone

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