.alpha.-Methylmaleic anhydride 2,5-Furandione, 3-methyl- 2-Methylmaleic anhydride 3-Methylmaleic anhydride 616-02-4 CITRACONIC ANHYDRIDE Citraconic acid anhydride Maleic anhydride, methyl- Methylmaleic anhydride Monomethylmaleic anhydride NSC6182 WLN: T5VOVJ D1