Furafylline is primarily used as a selective inhibitor of the cytochrome P450 enzyme CYP1A2. This application is particularly valuable in pharmacological research, where it helps to study the metabolic pathways of drugs that are substrates of CYP1A2. By inhibiting this enzyme, researchers can better understand the role of CYP1A2 in drug metabolism, assess potential drug-drug interactions, and evaluate the impact of enzyme inhibition on drug efficacy and safety. Additionally, Furafylline is utilized in toxicology studies to investigate the metabolism of environmental toxins and carcinogens that are processed by CYP1A2, aiding in the identification of mechanisms underlying toxicity and carcinogenesis. Its use in these areas contributes to the development of safer and more effective therapeutic agents.