Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'hemisuccinate'?

A. A succinate ester in which only one of the carboxy groups of succinic acid has been esterified.
B. A dicarboxylic acid monoester resulting from the formal condensation of the hydroxy group of cholesterol with one of the carboxy groups of succinic acid. A detergent that is often used to replace cholesterol in protein crystallography, biochemical studies of proteins, and pharmacology.
C. A dieter obtained by the forma condensation of the two carboxy groups of succinic acid with ethanol and 3-methylbutanol respectively.
D. A triterpenoid that is the 3-ethyl ester of lansic acid. It has been isolated from the twigs of Lansium domesticum.

Answer: A succinate ester in which only one of the carboxy groups of succinic acid has been esterified.