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Pregnadienedione (PDD), or pregna-4,20-dien-3,6-dione, is a
steroid and pherine, or
synthetic pheromone. PDD has been
found to
activate the vomeronasal...
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Estratetraenyl acetate (ETA): estra-1,3,5(10),16-tetraen-3-yl
acetate Pregnadienedione (PDD): pregna-4,20-dien-3,6-dione PH10, PH15, PH30, PH56, PH78, PH84...