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Structure of 499-05-8
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4-Oxo-4H-pyran-2-carboxylic acid features a conjugated β-keto acid moiety integrated within a pyran ring, enabling participation in Michael additions and condensation reactions. This electron-deficient heterocycle serves as a key scaffold for synthesizing bioactive molecules, particularly in medicinal chemistry and natural product analogs.
4-Oxo-4H-pyran-2-carboxylic acid serves as a versatile building block in heterocyclic synthesis, enabling efficient access to bioactive pyranoid frameworks. Its enolizable carbonyl and carboxylic acid functionalities support diverse transformations, including Michael additions, esterifications, and cyclizations. The compound exhibits good bench stability and facilitates straightforward purification, making it well-suited for medicinal chemistry campaigns and API intermediate development.
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GHS Pictogram :
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GHS No : GHS07
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Signal Word : Warning
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UN#: N/A
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Class : N/A
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Packing Group : N/A
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Hazard Statements : H302-H315-H319-H335
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Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501
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Lot numbers can be found on the outside label of a product: