5a-androstane = etioallocholane (Original early Superdrol)
5b-androstane = etiocholane (M-Drol / Most new Superdrol clones)
Etiocholane (in M-Drol) refers to the 5 beta isomer, not the 5 alpha(In AX Superdrol). 5 beta's are not known for their anabolic/androgenic properties...
Superdrols compound is: 2a, 17a-di methyl-5a-androstane-3-one-17b-ol, and has the target hormone 5aa, which is much stronger than M-Drol (M-Drol targets 5b)
mdrol:
Etiocholan-3a-ol-17-one
5b-Androsterone; Etiocholanone; 3a-Hydroxy-5b-androstan-17-one
C19H30O2 F.W. 290.45 CAS: 53-42-9
And original AX Superdrol is - 2a, 17a-di methyl-5a-androstane/androsterone-3-one-17b-ol very similar but after experiencing both I know for sure the original version Is ALOT stronger imo and I’ve got twice the gains too
A lot of guys over the years formulated their own opinions on this. But here is a comment from a guy who had inside information. (He used to work for SNS) :
"When we first came out with Methyl-Drol, we had it tested for purity and also had it tested against AX Superdrol. We were told by the lab that there were actually a couple different ways that we could label the product and that the way we chose to was technically the correct way. Keep in mind, we had the product not only tested for purity, but also tested against AX Superdrol.
To take that a step further, for those that remember when we first came out with Methyl-Drol, AX stated that they tested it themselves and then openly posted on AM (and maybe here, I cannot remember) that Methyl-Drol and their Superdrol were identical.
Now, how does that relate to M-Drol - 2 ways - 1. Labeled the same as our Methyl Drol was and 2. on their independant testing done by RTP, it shows the compound listed on the lab report the same way.
Keep in mind, I am no chemist so I cant offer any explanation further than what I just gave, but we had the compound itself tested for purity, we had it tested against Superdrol and the lab said it was the same, then AX acknowledged themselves that they were the same."