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    4-Chloro-5-iodo-1H-pyrrolo[2,3-d]pyrimidine, CAS 123148-78-7, is in stock from AChemBlock as a research-use heterocyclic building block.
    Chemical structure of 4-Chloro-5-iodo-1H-pyrrolo[2,3-d]pyrimidine , CAS 123148-78-7, AChemBlock C-3225

    4-Chloro-5-iodo-1H-pyrrolo[2,3-d]pyrimidine

    Catalog ID: C-3225

    Product Name: 4-Chloro-5-iodo-1H-pyrrolo[2,3-d]pyrimidine
    CAS: 123148-78-7
    MDL: MFCD09263258
    Purity: 97%
    Appearance: yellow solid
    FW: 279.47
    Formula: C₆H₃ClIN₃
    Smiles: ClC1=C2C(I)=CNC2=NC=N1
    4-Chloro-5-iodo-1H-pyrrolo[2,3-d]pyrimidine 97%, CAS#: 123148-78-7, Cat ID: C-3225, BUILDING BLOCKS, AChemBlock
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    For research use only. We do not sell to patients
    Grouped product items
    Packaging List / Sale Price Qty Total Total_Price($) Availability Estimated Ship Time
    Packaging:25G List Price: $25 / $21 Quantity:
    		Total:-- Total_Price($):-- Availability: In Stock San Francisco Estimated Ship Time:

    Jul 31,2026

    Packaging:100G List Price: $100 / $85 Quantity:
    		Total:-- Total_Price($):-- Availability: In Stock San Francisco Estimated Ship Time:

    Jul 31,2026

    update on 07-30-2026

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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 yellow solid
    Storage Store at 0-8 °C
    Shipping Room Temp
    MSDS Download MSDS
    IUPAC Name 4-chloro-5-iodo-7H-pyrrolo[2,3-d]pyrimidine
    HTS Code 2933998290
    Smiles ClC1=C2C(I)=CNC2=NC=N1
    InChiKey CBWBJFJMNBPWAL-UHFFFAOYSA-N
    Product Description 4-Chloro-5-iodo-1H-pyrrolo[2,3-d]pyrimidine (CAS 123148-78-7, Catalog ID C-3225) is in stock from AChemBlock. This product is listed for research use and can support medicinal chemistry, organic synthesis, and laboratory research applications. Please contact AChemBlock for quotation, pack size, purity, COA, SDS, and lead-time information.
    Product Application Used as a research-use heterocyclic building block for medicinal chemistry, organic synthesis, and drug discovery research.
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