looking it up its just an aas, you can be right in saying its a impurity from testosterone synthesis in the sense its not what you wanted to get but it acts completely as testosterone besides the stuff i will talk about down below.
but it will be metabolized through the liver into testosterone, just as normal test e would be metabolized into testosterone through the p450 enzyme. its basically just testosterone with higher binding affinity to the ar. metabolism rates might slightly differ because its higher binding affinity to the androgen receptor
so all in all, its completely normal testosterone. i dont see how this is the thing causing pip