Tris(2-chloroethyl)phosphate-d12 is the deuterium labeled Tris(beta-chloroethyl) phosphate. Tris(2-chloroethyl) phosphate is a widely used organic phosphorus flame retardant, mainly used as a plasticizer. Tris(2-chloroethyl) phosphate has orally active hepatotoxicity, inducing an increase in reactive oxygen species (ROS) and calcium ions (Ca) influx, a decrease in mitochondrial membrane potential (psim), and causing DNA damage and cell apoptosis. Tris(2-chloroethyl) phosphate directly binds to FXR, inducing obesity and the formation of fatty liver in mice. Chloroethyl) phosphate activates the TLR4/NF-kappaB pathway, triggering liver inflammation.