NPP (Nandrolone Phenylpropionate)
The first thing that you should know is that this anabolic steroid has a lot of the same properties as the compound, Nandrolone Decanoate (Deca). Actually, Nandrolone Phenylpropionate was marketed first, during the 50s. It was sold commercially under the brand name, Durabolin.
The company that made and sold Durabolin was called Organon. Later on, Organan would create a second formula, Nandrolone Decanoate, which was branded as Deca Durabolin.