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    Chemical structure of 3-Butynoic acid , CAS 2345-51-9, AChemBlock S86239

    3-Butynoic acid

    Catalog ID: S86239

    Product Name: 3-Butynoic acid
    CAS: 2345-51-9
    MDL: MFCD02258494
    Purity: 95%
    Appearance: light yellow solid
    FW: 84.07
    Formula: C₄H₄O₂
    Synonym(s): but-3-ynoic acid
    Smiles: C#CCC(=O)O
    3-Butynoic acid 95%, CAS#: 2345-51-9, Cat ID: S86239, BUILDING BLOCKS, AChemBlock
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    Packaging:25G List Price: $315 Quantity:
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    Jun 26,2026

    update on 06-14-2026

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    Safety Information
    Safety Information
    Pictograms GHS05 GHS06
    Signal Word Danger
    Hazard Statements Toxic if swallowed
    Toxic in contact with skin
    Causes severe skin burns and eye damage
    Precautionary Statements Do not breathe dust/fume/gas/mist/vapours/spray.
    Wash hands thoroughly after handling.
    Do not eat, drink or smoke when using this product.
    Wear protective gloves/protective clothing/eye protection/face protection.
    Product Information
    Product Information
    Product Information
    Purity 95%
    Appearances light yellow solid
    Storage Store at 0-8 °C
    Shipping Room Temp
    MSDS Download MSDS
    IUPAC Name but-3-ynoic acid
    HTS Code 2916155100
    Smiles C#CCC(=O)O
    InChiKey KKAHGSQLSTUDAV-UHFFFAOYSA-N
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