Steroid Esters Part II

Now that we have given you a basic background on what steroid esters are and what they do, we can give you specifics about how to apply this to your career, your recycle plant, and finding the amount of pure hormone you're ultimately going to want/need.

If you wish to find out the amount of pure steroid in a specific amount of esterified hormone, the steps are simple. Let us take Primobolan (Methenolone Enanthate) as an example. We want to figure out how much free Methenolone exists in 750mg of Methenolone Enanthate (Primobolan).


First we must find out the molecular weight of Methenolone itself (In its unesterified and pure form; this is very important): 302.45 g/mol


We must then calculate the molecular weight of the Enanthate ester (when unattached to any molecules, it is technically referred to as heptanoic or enanthic acid): 130.18 g/mol


The two weights must then be added in order to determine the total weight of Methenolone Enanthate: 302.45 + 130.18 = 432.63 g/mol


The total weight must then be divided by the weight of the ester in order to find out what  percentage of the compound's total weight is occupied by the Enanthate ester: 432.63 / 130.18 = 3.32


This number is our percentage; we multiply it by 10 to obtain the proper value. We get a total of 33% (rounded off).


33% of the Methenolone Enanthate molecule is occupied by the Enanthate ester. We wanted to know how much pure and free Methenolone is left over in 750mg of Primobolan Enanthate. This is a two-step process, so we must subtract 33% from 750mg: 750 x 0.33 = 247.5mg


247.5mg is how much weight the Enanthate ester comprises the 750mg total of Primobolan. If we subtract that number from 750, we get: 502.5mg of un-esterified free Methenolone left over from 750mg of Methenolone Enanthate (Primobolan).

Nick Trigili1 Comment