Cinchonidine dihydrochloride is primarily used in the field of organic chemistry as a chiral catalyst or resolving agent. Its application is significant in asymmetric synthesis, where it helps in the production of enantiomerically pure compounds. This is particularly useful in the pharmaceutical industry for the synthesis of active pharmaceutical ingredients (APIs) that require high enantiomeric purity to ensure efficacy and safety.

In addition, it is employed in the resolution of racemic mixtures, aiding in the separation of enantiomers which is crucial for the development of specific drugs and fine chemicals. Its role in catalysis also extends to various organic reactions, including hydrogenation and cyclization processes, where it enhances the selectivity and yield of desired products.

Furthermore, cinchonidine dihydrochloride is utilized in research and development laboratories for the study of stereochemistry and reaction mechanisms. Its ability to induce chirality in synthetic pathways makes it a valuable tool for chemists working on complex molecular structures.