Cyprodinil -d 5 is the deuterium labeled Cyprodinil. Cyprodinil is an anilinopyrimidine broad-spectrum fungicide that inhibits the biosynthesis of methionine in phytopathogenic fungi. Cyprodinil inhibits mycelial cell growth of B. cinerea , P. herpotrichoides , and H. oryzae on amino acid-free media (IC 50 s=0.44, 4.8, and 0.03 μM, respectively). Cyprodinil acts as an androgen receptor (AR) agonist (EC 50 =1.91 μM) in the absence of the AR agonist DHT and inhibits the androgenic effect of DHT (IC 50 =15.1 μM).