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    Chemical structure of 3,5-dimethyl-4-oxo-3H,4H-thieno[2,3-d]pyrimidine-6-carboxylic acid , CAS 439138-78-0, AChemBlock S75537

    3,5-dimethyl-4-oxo-3H,4H-thieno[2,3-d]pyrimidine-6-carboxylic acid

    Catalog ID: S75537

    Product Name: 3,5-dimethyl-4-oxo-3H,4H-thieno[2,3-d]pyrimidine-6-carboxylic acid
    CAS: 439138-78-0
    MDL: MFCD02928670
    Purity: 97%
    FW: 224.23
    Formula: C₉H₈N₂O₃S
    Synonym(s): 3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid
    Smiles: CC1=C(C(=O)O)SC2=C1C(=O)N(C)C=N2
    3,5-dimethyl-4-oxo-3H,4H-thieno[2,3-d]pyrimidine-6-carboxylic acid 97%, CAS#: 439138-78-0, Cat ID: S75537, BUILDING BLOCKS, AChemBlock
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    Aug 10,2026

    update on 06-15-2026

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    Safety Information
    Safety Information
    Pictograms GHS06
    Signal Word Danger
    Hazard Statements Toxic if swallowed
    Causes serious eye irritation
    Product Information
    Product Information
    Product Information
    Purity 97%
    Appearances
    Storage Store at 0-8 °C
    Shipping Room Temp
    MSDS Download MSDS
    IUPAC Name 3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid
    HTS Code 2934999001
    Smiles CC1=C(C(=O)O)SC2=C1C(=O)N(C)C=N2
    InChiKey UXEKRAQXZUUDCB-UHFFFAOYSA-N
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