DACN(Ms) (hydrochloride) (compound 1ba) is a click chemistry reagent containing cyclononyne alkyne. DCN(Ms) (hydrochloride) has high thermal stability, chemical stability, water solubility, and high reactivity for cycloaddition reactions[1].
References
[1] Yuuya Kawasaki, et al. Synthesis of NMs-DACN: Small and Hydrophilic Click Reaction Device.