Arsthinol (INN) is an antiprotozoal agent. It was synthesized for the first time in 1949 by Ernst A.H. Friedheim by complexation of acetarsol with 2,3-dimercaptopropanol (British anti-Lewisite) and has been demonstrated to be effective against amoebiasis and yaws. It was marketed a few years later by Endo Products (Balarsen, Tablets, 0.1 g). Among trivalent organoarsenicals, arsthinol was considered very well tolerated. Recently, it was studied for its anticancer activity.

Identification

Arsthinol has IUPAC name of N-[2-hydroxy-5-[4-(hydroxymethyl)-1,3,2-dithiarsolan-2-yl]phenyl] acetamide with a molecular formula of C11H14AsNO3S2 and is represented by the SMILES notation, CC(=O)NC1=C(C=CC(=C1)[As]2SCC(S2)CO)O.

Properties

The molecular weight of Arsthinol is 347.3 g/mol, with a hydrogen bond donor count of 3 and a hydrogen bond acceptor count of 5. It has 3 rotatable bonds, an exact mass of 347.279 g/mol, and a monoisotopic mass of 346.963105 g/mol. The topological polar surface area is 120Ų, and the compound contains 18 heavy atoms. It has no formal charge, a complexity of 308, and contains no isotope atoms. There are no defined atom stereocenters, but there is 1 undefined atom stereocenter. The compound has no defined or undefined bond stereocenters, includes 1 covalently bonded unit, and is canonicalized.