Impurity B of Calcitriol is primarily relevant in the pharmaceutical industry, where it is studied and monitored during the production and quality control of Calcitriol, a medication used to treat conditions related to calcium metabolism, such as hypocalcemia and osteoporosis. Its application lies in ensuring the purity and safety of Calcitriol formulations. By identifying and quantifying this impurity, manufacturers can adhere to regulatory standards and maintain the efficacy of the drug. Additionally, research on Impurity B helps in understanding its potential impact on the stability and pharmacokinetics of Calcitriol, contributing to the development of safer and more effective therapeutic products.