2,5-Pyrrolidinedione, 3-methylene-1-(3-nitrophenyl)- 4137-12-6 B 720 BRN 1537074 Itaconic acid 3-nitrophenylimide N-(3-Nitrophenyl)itaconimide NPI Naugatuck 720 Succinimide, 2-methylene-N-(m-nitrophenyl)-