1123-61-1 1H-Pyrrole-2,5-dione, 3,4-dichloro-1-methyl- 2,3-Dichloro-N-methylmaleinimide Maleimide, 2,3-dichloro-N-methyl- Maleimide, dichloro-N-methyl- N-Methyl-2,3-dichloromaleimide N-Methyl-3,4-dichloromaleimide N-Methyldichloromaleimide NSC222494