2-Propynoic acid, 3-(4-chlorophenyl)-, methyl ester, also known as Methyl 3-(4-Chlorophenyl)propiolate, is a chemical compound that belongs to the class of propynoic acid derivatives. This compound has gained significant attention in the scientific community due to its potential biological and industrial applications. It can be achieved through various methods, the commonly used method is the reaction of 4-chlorobenzaldehyde with propargyl alcohol in the presence of a base such as potassium carbonate. The resulting product is then esterified with methanol to obtain 2-Propynoic acid, 3-(4-chlorophenyl)-, methyl ester.