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.