608-40-2 Butanedioic acid, 2,3-dimethyl-, (R*,S*)- Butanedioic acid, 2,3-dimethyl-, [R-(R*,S*)]- NSC400523 Succinic acid, 2,3-dimethyl-, erythro-meso- Succinic acid, 2,3-dimethyl-, meso- erythro-2,3-Dimethylsuccinic acid