CAS 123457-83-0 appears in our catalog under these names: 4-(Maleinimido)phenyl isocyanate, 95%, 1-(4-Isocyanatophenyl)-1H-pyrrole-2,5-dione, 95+%, 4–(Maleinimido)phenyl isocyanate, 4-Maleimidophenyl Isocyanate, >98.0%(HPLC), p-Maleimidophenylisocyanate. Offered by: Combi-blocks, AmBeed, GLPBio, TCI, Biosynth. Available pack sizes: 1g, 100mg, 250mg, 25mg, 5mg, 0,025g, 0,05g, 0,1g.