Trans-4-(Maleimidomethyl) cyclohexanecarboxylic Acid is a kind of carboxylate, being well known for its N-hydroxysuccinimide ester derivative (SMCC), which is a useful cross-linking reagent. SMCC is widely used for the generation of stable maleimide-activated carrier proteins, enzyme immunoconjugates and hapten carrier molecule conjugates. It can be used for the coupling of a peptide to an amino group.
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Zhang, Hongyan, et al. "Antifreeze protein detection using Rhodamine B as photoluminescence label inporous silicon." Current Applied Physics13.4(2013):736-742.