Impurity C of Calcitriol is primarily relevant in the pharmaceutical industry, where it is studied for quality control and regulatory compliance. Its main application lies in ensuring the purity and safety of Calcitriol, a medication used to treat conditions like hypocalcemia, osteoporosis, and chronic kidney disease. By identifying and quantifying this impurity, manufacturers can maintain strict standards during the production process, ensuring the final product is effective and safe for patients. Additionally, research on this impurity helps in understanding its potential impact on the stability and efficacy of Calcitriol formulations, contributing to improved drug development and storage protocols.