3-Mercaptopropionic acid

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3-Mercaptopropionic acid
3-Mercaptopropionic acid.svg
Names
IUPAC name
3-Sulfanylpropanoic acid
Other names
3-MPA; 3-Mercaptopropanoic acid; β-Mercaptopropionic acid
Identifiers
3D model (JSmol)
773807
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.003.216
EC Number 203-537-0
101294
UNII
Properties
C3H6O2S
Molar mass 106.14 g·mol−1
Density 1.218
Melting point 16.9 °C (62.4 °F; 290.0 K)
Boiling point 111 °C (232 °F; 384 K)
soluble
Solubility ether
Benzene
alcohol
Acidity (pKa) 4.34
1.4911 at 21 °C
Hazards
GHS pictograms The corrosion pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)The skull-and-crossbones pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word Danger
H290, H301, H314, H318, H332
P234, P260, P261, P264, P270, P271, P280, P301+310, P301+330+331, P303+361+353, P304+312, P304+340, P305+351+338, P310, P312, P321, P330, P363, P390, P404, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

3-Mercaptopropionic acid (3-MPA) is an organosulfur compound with the formula HSCH2CH2CO2H. It is a bifunctional molecule, containing both carboxylic acid and thiol groups. It is a colorless oil. It is derived from the addition of hydrogen sulfide to acrylic acid.

Reactions and uses[edit]

It is competitive inhibitor of glutamate decarboxylase that act as a convulsant. It has higher potency and faster onset of action compared to allylglycine.[1]

It is used to prepare hydrophilic gold nanoparticles, exploiting the affinity of gold for sulfur ligands.[2]

See also[edit]

References[edit]

  1. ^ Horton, R. W; Meldrum, B. S (1973). "Seizures induced by allylglycine, 3-mercaptopropionic acid and 4-deoxypyridoxine in mice and photosensitive baboons, and different modes of inhibition of cerebral glutamic acid decarboxylase". British Journal of Pharmacology. 49 (1): 52–63. PMC 1776427. PMID 4207045.
  2. ^ Subramanian, Vaidyanathan; Wolf, Eduardo E.; Kamat, Prashant V. (2004). "Catalysis with TiO2/Gold Nanocomposites. Effect of Metal Particle Size on the Fermi Level Equilibration". Journal of the American Chemical Society. 126: 4943–4950. doi:10.1021/ja0315199.CS1 maint: Uses authors parameter (link)