Phytosphingosine-d7 (4-Hydroxysphinganine-d7) is a deuterium-labeled version of Phytosphingosine. This phospholipid exhibits anti-inflammatory, antibacterial, and anticancer properties and can induce apoptosis. Additionally, Phytosphingosine acts as an immunomodulator and is useful for studying inflammatory skin conditions. It also serves as a GPR120 activator with an IC50 of 33.4 μM, relevant in type 2 diabetes research.