I have seen a model for the absorption rate that mathematically describes the profound effect of molecular weight on absorption but I cannot now find it, sorry. This study reaches the same conclusion by a different means and tren without the acetate would also more closely meet the other crieria it specifies. This article is for plogels but the logic is the same for dmso etc
" The kinetics of absorption can be explained mathematically by assuming that the rate-limiting step for absorption occurs at the vehicle-drug .stratum corneum interface. This equation,derived from Fick’s law,is as follows:
J=Kp(.C) where:
J =the quantity of drug absorbed per unit of time and surface area
Kp =the permeability constant of the stratum corneum
.C =the difference between the concentration of the drug above and below the stratumcorneum
The permeability constant,Kp,can be further broken down as follows: Kp =D(K1)/e where:
D =the diffusion constant of the drug through the stratum corneum interface
K1 =the ratio of the solubility of the drug in the stratum corneum versus that in the vehicle
e =the thickness of the stratum corneum"
What this all comes down to in real terms is that:
"the best percutaneous absorption is achieved when (a)the drug is of relatively low molecular weight and is highly lipophilic, (b)the drug is much more soluble in the stratum corneum than in the vehicle in which it is dissolved,(c)the concentration of the drug is relatively high in the vehicle,(d)the vehicle-drug mixture is applied over a large surface area,or (e)the stratum corneum is thin."
Taken from the following article Invalid Link Removed
Removing the acetate molecule will reduce the molecular mass by 18% a significant inpact on absorption.
I do not think the issue with viruses is a real one, certainly not seen anything in relation to viruses and phlogels. But if it does concern you the process of making tren base with NaOH will sterilize things well and give an opportunity to pass the tren base solution through a watman filter.