| citraconic acid, dimethyl ester |
| 2-methyl-, dimethyl ester, (z)-2-butenedioic aci |
| cis-2-methyl-2-butenedioic acid, dimethyl ester |
| dimethyl citraconate |
| dimethyl methyl maleate |
| methylmaleic acid, dimethyl ester |
| citraconicaciddimethylester |
| cis-2-methyl-but-2-enoic acid dimethyl ester |
| methylmaleic acid dimethyl ester |