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    Chemical structure of (1aR,1a1r,3as,5aS)-octahydro-1H-cyclobuta[cd]pentalen-1-one , CAS 188540-21-8, AChemBlock Q65472

    (1aR,1a1r,3as,5aS)-octahydro-1H-cyclobuta[cd]pentalen-1-one

    Catalog ID: Q65472

    Product Name: (1aR,1a1r,3as,5aS)-octahydro-1H-cyclobuta[cd]pentalen-1-one
    CAS: 188540-21-8
    MDL: MFCD31744452
    Purity: 97%
    FW: 136.2
    Formula: C₉H₁₂O
    Synonym(s): (1ar,1a1r,3as,5as)-octahydro-1h-cyclobuta[cd]pentalen-1-one
    Smiles: [H][C@]12CC[C@]3([H])C(=O)[C@]([H])(CC1)[C@]23[H]
    (1aR,1a1r,3as,5aS)-octahydro-1H-cyclobuta[cd]pentalen-1-one 97%, CAS#: 188540-21-8, Cat ID: Q65472, BUILDING BLOCKS, AChemBlock
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    Grouped product items
    Packaging List Price Qty Total Total_Price($) Availability Estimated Ship Time
    Packaging:1G List Price: $560 Quantity:
    		Total:-- Total_Price($):-- Availability: In Stock Global Estimated Ship Time:

    Jun 29,2026

    Packaging:5G List Price: $2,240 Quantity:
    		Total:-- Total_Price($):-- Availability: In Stock Global Estimated Ship Time:

    Jun 29,2026

    update on 06-15-2026

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    Safety Information
    Safety Information
    Pictograms GHS07
    Signal Word warning
    Hazard Statements Harmful if swallowed
    Causes skin irritation
    Causes serious eye irritation
    May cause respiratory irritation
    Precautionary Statements Avoid breathing dust/fume/gas/mist/vapours/spray.
    Wear protective gloves/protective clothing/eye protection/face protection.
    Product Information
    Product Information
    Product Information
    Purity 97%
    Appearances
    Storage Store at Room Tem.
    Shipping Room Temp
    MSDS Download MSDS
    IUPAC Name (1ar,1a1r,3as,5as)-octahydro-1h-cyclobuta[cd]pentalen-1-one
    HTS Code 2914295000
    Smiles [H][C@]12CC[C@]3([H])C(=O)[C@]([H])(CC1)[C@]23[H]
    InChiKey WUWMCJHLMPZUGY-XSHWGTKXSA-N
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