4-Pentynoic acid

4-Pentynoic acid (Propargylacetic acid) is an intermediate to produce biologically active compounds. 4-Pentynoic acid is widely utilized as a building block for the synthesis of eight sequence-defined model oligomers^[1]. 4-Pentynoic acid is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups. In Vitro:Click chemistry is used to describe the selective, modular, wide range and high-yield chemical reactions that allow rapid synthesis of new compounds through heteroatom linking (C-X-C). Bertozzi developed click chemistry in a new dimension —Bioorthogonal chemistry. It is defined as a rapid and selective reaction that does not interfere with biological processes under physiological conditions. Common reaction structures of click chemistry, such as Azide, Alkyne, DBCO, BCN, TCO and Tetrazine.