Buy 99.4% Purity Bulk Raw Steroid Nandrolone Phenylpropionate (Durabolin, NPP) Powder Online CAS 62-90-8 Nandrolone Phenylpropionate Description Nandrolone phenylpropionate (NPP), or nandrolone phenpropionate, sold under the brand name Durabolin amomg others, is a synthetic androgen and anabolic steroid and a nandrolone ester. Nandrolone phenylpropionate is marketed in many countries throughout the world, including in the United Kingdom and Canada, and …