Katacalcin TFA is primarily used in biochemical research and pharmaceutical studies. It plays a role in investigating calcium metabolism and related physiological processes. Researchers utilize it to study its effects on bone resorption and calcium homeostasis, which can provide insights into conditions like osteoporosis. Additionally, it is employed in peptide synthesis and as a reference standard in analytical chemistry to ensure accuracy in experiments. Its application is crucial in developing therapeutic strategies for calcium-related disorders and advancing understanding of endocrine functions.