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    Chemical structure of 1H-Pyrazol-3(2H)-one , CAS 137-45-1, AChemBlock K16200

    1H-Pyrazol-3(2H)-one

    Catalog ID: K16200

    Product Name: 1H-Pyrazol-3(2H)-one
    CAS: 137-45-1
    MDL: MFCD00629300
    Purity: 95%
    Appearance: yellow solid
    FW: 84.08
    Formula: C₃H₄N₂O
    Synonym(s): 1,2-dihydro-3h-pyrazol-3-one
    Smiles: O=C1C=CNN1
    1H-Pyrazol-3(2H)-one 95%, CAS#: 137-45-1, Cat ID: K16200, BUILDING BLOCKS, AChemBlock
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    update on 06-14-2026

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    Safety Information
    Safety Information
    Pictograms GHS07
    Signal Word Warning
    Hazard Statements Causes skin irritation
    Causes serious eye irritation
    May cause respiratory irritation
    Precautionary Statements Avoid breathing dust/fume/gas/mist/vapours/spray.
    Product Information
    Product Information
    Product Information
    Purity 95%
    Appearances yellow solid
    Storage Store at 0-8 °C
    Shipping Room Temp
    MSDS Download MSDS
    IUPAC Name 1,2-dihydro-3h-pyrazol-3-one
    HTS Code 29339982
    Smiles O=C1C=CNN1
    InChiKey XBYRMPXUBGMOJC-UHFFFAOYSA-N
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