4-Pentynoyl-Val-Ala-PAB-PNP is a cleavable ADC linker, that has been used to synthesis cryptophycin conjugates . 4-Pentynoyl-Val-Ala-PAB-PNP is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
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