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Caronic anhydride

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Origin: China

Cas No: 67911-21-1

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 5 mt/month

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

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  • Products Specification
  • Product Description
  • Test items

    Specification

    Appearance

    Off-white to white crystalline powder

    Melting point

     52.0~55.0 ℃

    Residue of ignition

     ≤ 0.20 %

    Purity by GC

     ≥ 99.0 %

     

    Application: Anti Covid-19 Coronavirus pharmaceutical Paxlovid intermediate

  •  

    Property

    CAS No.: 67911-21-1 Formula: C7H8O3 Molecular Weight: 140.13700
     

    Basic Info

    Chemical Name 6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione
    Synonyms

    Caronic anhydride;

    CAS No. 67911-21-1
    Molecular Formula C7H8O3
    Molecular Weight 140.13700
    PSA 43.37000
    LogP 0.34200
     

    Properties

    Density 1.274
    Boiling Point 246ºC
    Melting Point 52-55ºC
    Flash Point 113ºC
    Refractive Index 1.499
     

    Safety Info

    HS Code 2917209090
     

    Synthesis Route

    3,3-dimethylcyclopropane-1,2-dicarboxylic acid→6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione
    trans-caronic acid→6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione
    Ethyl chrysanthemumate→6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione
     

    Precursor

    3,3-dimethylcyclopropane-1,2-dicarboxylic acid
    Ethyl chrysanthemumate
    4,7,7-trimethylbicyclo[4.1.0]heptan-5-one
    trans-caronic acid
     

    Downstream Product

    6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2,4-dione
    6,6-Dimethyl-3-azabicyclo[3.1.0]hexane
    6,6-dimethyl-3-azabicyclo[3.1.0]hexane,hydrochloride

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