# Ester Weight and Concentrations

I have T-Cyp 250mg/ml, T-Enanth 250mg/ml, and T-Prop 100mg/ml. The ester weight difference and the mg/ml difference
Has me concerned on how to dose the Prop in keeping with the 100mg wk- pin 3x a wk, protocol. Thank you for any help you can give.

Look these up at Wikipedia and compare molecular weights to molecular weight of testosterone itself. You will then be able to figure out the amount of T in each and do the math.

I am not finding the molecular mass or much of anything about propianate on wiki…any other source of this info
Or maybe even the shortcut to the answer on how to dose the T-prop to attempt maint of steady levels?

Mol. mass 288.42
above from the panel if properties on the right

You can find the data if you search.

cypionate:
Molecular Weight: 412.6112
Molecular Weight (base): 288.429
Molecular Weight (ester): 132.1184

Ethanate:
Molecular Weight 400.60

Prop:
Molecular Weight (base): 288.429
Molecular Weight (ester): 74.0792

100mg:
Chemical = Formula = Molecular Weight = Mg of Testosterone
Testosterone (no ester) = Carbolin 19 H28 O2 = 288.4mg = 100mg
Propionate = C3 H4 O = 56.1mg = 83.72mg
Cypionate = C8 H4 O = 124.2mg = 69.90mg
Molecular Weight (ester): 74.0792

This appears to be most useful:

Ester actual mg/100mg dose
test no ester 100
test prop 83
test enanth 72
test cyp 70

fake testosterone follows:
tren acetate 87
test undecan 63
nand phenyl 67
nand deca 64

Feeling a little dense this am. So, the printed concentration (mg/ml) on the vials can’t be used effectively for simple
Breakdown calculations to maintain even test levels through these three diff esters?
After rereading the Advice for new guys sticky, I am thinking using the actual #'s from your above posted “most useful” are the right path to consistency of test inj levels.
Have you done prop yourself? Do you make adjustments based on those #'s?