i think the FDA test said that trenadrol was 19-nor, but it is assumed that they changed the formula from something else.
Concerning Tren and other AAS i think a general statement that can be made is the steroids with the harshest side effects are most compatible with certain people and almost incompatible with others. Take Tren and Superdrol for instance, for some people the sides on these are so bad that they basically cannot run them at a normal dose.
For other people, these steroids with the most sides are great... For me SD is about as good as it gets, and it makes most other orals obsolete, i'm better off running SD again and again.
I have heard people say the same of Tren, if you respond well to it and don't get the bad sides then it basically makes other steroids obsolete.
Tren is only nectar of the gods for some people... I know of people that do 100mg ED with tren ace and gain like mad, and it raises their libido... now that's a good response! Myself, i am afraid of tren, i am pretty sure it will give me gyno issues.