Thiopropionic acid; 3-Thiopropanoic acid; beta-Mercaptopropionic acid
CAS Registry Number
3-Mercaptopropanoic acid; β-Mercaptopropionic acid; Propanoic acid, 3-mercapto-; β-Thiopropionic acid; Hydracrylic acid, 3-thio-; Mercaptopropionic acid; Propionic acid, 3-mercapto-; 3-Thiopropionic acid; 3MPA; 3-Thiopropanoic acid; 2-Mercaptoethanecarboxylic acid; NSC 437; β-Mercaptopropanoic acid; 3-Thiolpropanoic acid
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.
This compound is used to produce hydrophilic SAMs. The resulting monolayers which are terminated with carboxylic acids can be further functionalized to introduce more complex end groups such as enzymes for biosensor applications.