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When you get a steroid such as Test Cypionate, Prop, Enanthate etc... Some of the MG's are actually the ester.
For example:
Chemical = Formula = Molecular Weight = Mg of Testosterone
Testosterone (no ester) = C19 H28 O2 = 288.4mg = 100mg
Propionate = C3 H4 O = 56.1mg = 83.72mg
Cypionate = C8 H4 O = 124.2mg = 69.90mg
So you see, the longer the ester on the testosterone is, the longer the steroid is active in your body, and the less actual test you get. This is because, for every 100mgs of testosterone cypionate you inject, only 69.90mgs of it is actually testosterone, the rest is the cypionate ester, which must be removed. On the other hand, with the propionate ester you?ll get 83.72mgs of Testosterone!
The advantage to longer esters is that they need to be injected less frequently (test prop needs to be injected every other day or every day while you can shoot test cyp once a week to twice a week). The disadvantage to long estered steroids is that they contain less actual steroid.
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