Pyrrolidonecarboxylic acid, commonly known as PCA, is a chemical compound frequently utilized in various industries. However, it is beneficial to be aware of alternative names or synonyms for PCA, as it can aid in understanding its applications or identifying it in scientific literature. Some synonyms for pyrrolidonecarboxylic acid include 2-Pyrrolidone-5-carboxylic acid, 5-Carboxy-2-pyrrolidone, alpha-pyrrolidonecarboxylic acid, and 5-Oxo-L-proline. These synonyms can be particularly useful during research or when analyzing chemical structures. Understanding these alternative names broadens our comprehension and facilitates effective communication within scientific communities and industries using PCA or its derivatives.