Boldenone undecylenate (CAS No.: 13103-34-9), or boldenone undecenoate, sold under the brand names Boldane, Equipoise, Parenabol ect, is a synthetic and injected anabolicandrogenic steroid (AAS) and androgen ester which is used in veterinary medicine, specifically in horses.Equipoise is a long-acting ester prodrug of boldenone, which itself is a naturally occurring androgen (found in the scent gland of Ilybius fenestratus) and dehydrogenated analogue of testosterone.Boldenone Undecylenate PropertiesBoldenone undecylenate is well known for its lean mass increases as well as its appetite-stimulant effects, which is an effect common among nearly all anabolic steroids. However, Equipoise tends to stimulate the appetite to far greater degrees than any other anabolic steroids.Boldenone undecylenate being a derivative of Testosterone grants it many of the same properties. For one thing, it possesses the exact same anabolic strength rating (100), and it is also an aromatizable anabolic steroid, which means that Equipoise can and does convert into Estrogen in the body through interaction with the aromatase enzyme.but at a far less significant amount than its parent hormone Testosterone.