Benz[a]anthracene-d12 is the deuterated form of Benz[a]anthracene (HY-W012278). Benz[a]anthracene is a ligand for the aromatic hydrocarbon receptor (AhR), with a pIC50 value of 7.319. Benz[a]anthracene is a polycyclic aromatic hydrocarbon (PAH) that can be detected in the spruce needles near aluminum smelters[1].