Chinese Name: L-Proline

English Name: L-Proline

CAS Number: 147-85-3

Quality Standard: AJI, USP, FCC, EP, BP, CP

Alias: L-Pyrrolidinecarboxylic Acid

Molecular Formula: C₅H₉NO₂                

Molecular Weight: 115.13

Appearance: Colorless needle-like or rhombic crystals. Odorless. Slightly sweet taste. Hygroscopic. Reacts with ninhydrin reagent to produce a yellow color, turning red when acidified with glacial acetic acid. Soluble in water and ethanol, insoluble in ether.

Uses: It is one of the essential components for human protein synthesis and has a wide range of applications. In the field of organic chemistry, it is used as a catalyst in asymmetric synthesis, amination, polymerization, and hydrolysis reactions. In agriculture, it can serve as a crop supplement. In food processing, due to its unique short aroma, L-Proline is added to foods to enhance flavor and taste.