Succimer [Chemical/Ingredient] meso-Dimercaptosuccinic Acid Succimer M0006442 N0000006686 Succimer 3446 C23720 A mercaptodicarboxylic acid used as an antidote to heavy metal poisoning because it forms strong chelates with them. Butanedioic acid, 2,3-dimercapto-, (R*,S*)- C0012384 DMSA 2,3-Dimercaptosuccinic Acid Succimer D004113 Succinic Acids [Chemical/Ingredient] Sulfhydryl Compounds [Chemical/Ingredient]