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    31251-41-9

    Catalog No. EBD6649

    CAS 31251-41-9

    Name 8-Chloro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11(6H)-one

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    Basic Information

    Synonyms: 8-Chloro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11(6H)-one 8-Chloro-10,11-dihydro-4-aza-5H-dibenzo[a,d]cycloheptan-5-one 11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one,8-chloro-5,6-dihydro- 8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one

    Molecular Formula: C14H10ClNO

    Molecular Weight: 243.69

    MDL Number: MFCD00800222

    Categories: Medicinal Chemistry > Pharmaceutical Intermediates > Heterocyclic Intermediates Medicinal Chemistry > APIs and Their Salts > Antineoplastic Agents

    Product Description:
    8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one is a complex tricyclic organic compound featuring a fused benzocycloheptapyridinone core structure with a chlorine substituent. It is a key synthetic intermediate in the preparation of loratadine, a widely used second-generation antihistamine, and its active metabolite, desloratadine. This compound serves as a crucial advanced building block in the multi-step synthesis of loratadine. The synthetic route typically involves the cyclization and subsequent functionalization of this intermediate to construct the final drug molecule. Its primary and well-defined industrial application is in the pharmaceutical manufacturing sector for the production of anti-allergy medications. As a specialized pharmaceutical intermediate, it is not a commodity chemical and is primarily handled in controlled industrial or research settings for synthetic purposes. Proper handling procedures should be followed due to its status as a fine chemical intermediate.
    Physical Properties

    Melting Point: 90-92°C

    Boiling Point: 433.614 °C at 760 mmHg

    Flash Point: 216.042 °C

    Density: 1.314 g/cm3

    Analytical Data

    Appearance: Yellow solid

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