Vulcan the blacksmith, a character in the 2001 novel The Secrets of Vesuvius, which is part of the 2001 to 2009 historical fiction series The Roman Mysteries by Caroline Lawrence, has clubfoot. Princess Matilda, the main character of Handbook for Dragon Slayers by Merrie Haskell, a 2013 novel published by HarperCollins, has a clubfoot. Ada, the main character of the 2016 childrens book The War That Saved My Life by Kimberly Brubaker Bradley, has clubfoot. Her mother emotionally and physically abuses her because of it. References


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It also increases urinary excretion of copper and zinc. Dimercaptosuccinic acid improved cognitive function in rats that had been exposed to lead, but reduced cognitive function in rats that had not been exposed to lead.7,8-dihydroxyflavone can reverse long-term effects of chronic Lead exposure in the brain. Chemistry
It is the organosulfur compound with the formula HO2CCH(SH)CH(SH)CO2H. This colorless solid contains two carboxylic acid and two thiol groups, the latter being responsible for its mildly unpleasant odour. It occurs in two diastereomers, meso and the chiral dl forms. The 2,3-dimercaptosuccinic acid molecule has two stereocentres (two asymmetric carbon atoms), and can exist as three different stereoisomers. The 2S,3S and 2R,3R isomers are a pair of enantiomers, whereas the 2R,3S isomer is a meso compound and thus optically inactive. Preparation and reactivity
Dimercaptosuccinic acid may be prepared by reacting acetylenedicarboxylic acid with sodium thiosulfate or thioacetic acid followed by hydrolysis. The dimethyl ester is also known.Meso 2,3-dimercaptosuccinic acid binds to "soft" heavy metals such as Hg2+ and Pb2+, mobilizing these ions for excretion. It binds to metal cations through the thiol groups, which ionize upon complexation. History
Dimercaptosuccinic acid was first synthesized by V. Nirenburg in the Urals Polytechnic Institute, commissioned by one of the electrical enterprises of Sverdlovsk, which consumed many tons of mercury and was looking for a medicine to prevent poisoning of personnel. In 1957,  Chinese scientists found that dimercaptosuccinic acid can effectively treat antimony poisoning due to overdose of tartar emetic.