Succimer is a widely used chelating agent for the treatment of Pb poisoning.
Red blood cells (RBCs) from lead exposed animals treated with NAC or Succimer are shown to have significantly higher glutathione (GSH) levels and diminished malondialdehyde (MDA) levels when compare to the lead group. Succimer administration also results in decreased glucose 6-phosphate dehydrogenase (G6PD) activity in RBCs from lead exposed animals. Succimer treatment produces a significant reduction in blood lead levels for both lead exposure conditions: the High Pb-succ group has blood lead levels that are 27% of the blood lead levels of the High Pb group at the end of treatment. Succimer is effective in substantially reducing brain lead, as brain lead levels in the High Pb-succ group are 37% of levels in the High Pb group.
MSA powder is indicated for the treatment of lead poisoning in children with blood levels measured above 45 µg/dL. The use of DMSA is
not approved for prophylactic/prevention of lead poisoning in anticipation of exposure in known lead-contaminated environments. Its elimination
half-life is 2.5-3.5 h. DMSA can cross the blood-brain barrier of mice, but not that of humans, limiting its use to extracting heavy metals from parts
of the body other than the central nervous system.
Another application for DMSA is for the provocation of tissue-heavy metals in anticipation of a urine test. This is sometimes called a "challenge" or
"provoked" heavy metals test. DMSA is used to help mobilize heavy metals stored in body tissues (and therefore not typically present in the circulation) and increase the excretion of heavy metals in the urine. In a study by Howard Frumkin et al., this sort of test was shown to not reliably provide an indication of past chronic exposure, something it was often used for. A 2004 study by GP Archbold, et al. called the results of a DMSA challenge test "misleading" for the purposes of diagnosing toxicity. Moreover, DMSA shares the limitation of extracellular distribution, which makes it unable to cross the cell membrane and chelate heavy metals from intracellular sites.
The relative activities of a series of novel monoalkyl esters of meso-2,3-dimercaptosuccinic acid (DMSA) have been examined as agents for the
mobilization of c admium, lead owing to the ability of these monoesters to cross cell membranes. The monoesters were found to be
more effective than the parent compound DMSA.
Product Name: DMSA; Succimer
CAS: 304-55-2
Product Name |
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CAS | 304-55-2 | |
MF | C4H6O4S2 | |
MW | 182.22 | |
Density | 1.439 | |
Refractive index | 1.5220 | |
Appearance | White powder; | |
Boiling point | 196-198 °C | |
Melting point | 196-198°C (dec.)(lit.) | |
FP |
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Water soluabliity | Soluble in water, and ethanol (25 mg/ml, results in colorless to light yellow, clear). | |
Vapour pressure | 0.002mmHg at 25°C | |
Soluabliity | DMSO (Sparingly) | |
Storage | -20°C | |
Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
Wuhan Quanjinci New Material Co., LTD. is located in Wuhan, Hubei Province, China. We mainly produce ketones, alcohols, organic acids, caine and other fine chemicals and organic chemical raw materials. Products are exported to North America, Europe, Australia, Middle East and other regions. At the same time, we can also provide customers with product customization services.
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Our products meet msds safe standard and we have iso and other certificate so yan can get high quality products from our company.
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