Phytane is widely used in geochemical studies as a biomarker to assess the origin and thermal maturity of organic matter in sedimentary rocks. It helps in reconstructing past environmental conditions, particularly in petroleum exploration, where it serves as an indicator of ancient microbial activity and depositional environments. Additionally, phytane is utilized in paleoclimate research to understand historical changes in Earth's ecosystems and climate. Its presence in crude oil and sediments provides valuable insights into the processes of hydrocarbon formation and degradation.