Merck, 900831, 3-(3-(But-3-yn-1-yl)-3<I>H</I>-diazirin-3-yl)propanoic acid

Application
Used for chemical probe synthesis, this trifunctional building block contains a light-activated diazirine, alkyne tag, and carboxylic acid synthetic handle. When appended to a ligand or pharmacophore through its acid linker, this building block allows for UV light-induced covalent modification of a biological target with potential for downstream applications via the alkyne tag. Use alone or in parallel with other multi-functional building blocks to discover the optimal probe for your chemical biology experiments.
Other Notes
Design and Synthesis of Minimalist Terminal Alkyne-Containing Diazirine Photo-Crosslinkers and Their Incorporation into Kinase Inhibitors for Cell- and Tissue-Based Proteome Profiling

Fluorescein Derivatives as Bifunctional Molecules for the Simultaneous Inhibiting and Labeling of FTO Protein
Technology Spotlight: Trifuctional Probe Building Blocks