1-(Fluorosulfonyl)-2,3-dimethyl-1H-imidazol-3-ium trifluoromethanesulfonate (Cas Number 2179072-33-2) is a solid fluorosulfuryl imidazolium triflate salt (SuFEx-IT).
It's often used as an alternative to sulfuryl flouride (SO2F2), which can be difficult to access given its complex handling... Read More