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Structure of 2345-51-9
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3-Butynoic acid serves as a versatile building block in synthetic organic chemistry, enabling efficient access to conjugated enynes and heterocyclic scaffolds via palladium-catalyzed coupling reactions. Its terminal alkyne functionality facilitates reliable Sonogashira couplings, while the carboxylic acid group supports straightforward derivatization and purification. The compound exhibits good bench stability and functional group tolerance, making it well-suited for iterative synthesis workflows in medicinal chemistry and materials science applications.
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GHS No : GHS05,GHS06
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Signal Word : Danger
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UN#: 2923
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Class : 8 (6.1)
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Packing Group : Ⅱ
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Hazard Statements : H301+H311-H314
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Precautionary Statements : P260-P264-P270-P280-P301+P330+P331-P302+P352-P304+P340-P330-P361+P364-P363-P405-P501
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Lot numbers can be found on the outside label of a product: