Sub Group: Maleimide Derivatives Alphabetic Listing Catalog Number: 12865 Formula: C13H19N2O3 CAS Number: 15178-63-9 Molecular Weight: 251.3 Synonyms: 4-(2,5-Dihydro-2,5-dioxo-1H-pyrrol-1-yl)-2,2,6,6-tetramethyl-1-piperidinyloxyTEMPO-Maleimide, 4-Maleimi