Oxandrolone is a synthetic androstane steroid and a 17α-alkylated derivative of DHT.    It is also known as 2-oxa-17α-methyl-5α-dihydrotestosterone (2-oxa-17α-methyl-DHT) or as 2-oxa-17α-methyl-5α-androstan-17β-ol-3-one, and is DHT with a methyl group at the C17α position and the C2 carbon replaced with an oxygen atom.    Closely related AAS include the marketed AAS mestanolone (17α-methyl-DHT), oxymetholone (2-hydroxymethylene-17α-methyl-DHT), and stanozolol (a 2,3- pyrazole A ring -fused derivative of 17α-methyl-DHT) and the never-marketed/ designer AAS desoxymethyltestosterone (3-deketo-17α-methyl-δ 2 -DHT), methasterone (2α,17α-dimethyl-DHT), methyl-1-testosterone (17α-methyl-δ 1 -DHT), and methylstenbolone (2,17α-dimethyl-δ 1 -DHT).   
I have used Roid bazaar may times now and as you can see love LA Pharma products now. The Tren was 100 percent legit, since it gave me Tren cough, felt like I was going to die, but I just used under ml and slowed down the pin to avoid this. Felt like superman on this stuff. Massively improved my vascularity and had more energy than I could deal with. Used just over 2 ml a week and stacked it with the Dianabol on my 20mg a day which also improved my strength. Both great products! Took a month off and then tried the Sustanon 400. I took the clen at the same time and got to sketchy and had skipped heart beats so kept the Clenbuterol for a rainy day. But the Sus my god was amazing. Pinned 600mg a week and my strength hit the roof. Not as much energy as he Tren but my size was out of the roof and actually kept most of it, just lost a bit of water weight but again wow. Only bad part was really oily skin and you can act smell it in your urine. Really strong, if you mean business definitely this one and the Tren!