Extract with diethyl ether, and then recrystallize from methanol-water or ethanol-water. Maybe re-crystallize 2 times.
If you don't mind TnE, its even easier - hydrolyze the ester with base, collect the filtrate, wash, and re-crystallize.
Method I would personally use: extract and concentrate, and seperate on a preparatory chromatography columnn, or preparatory HPLC, and re-crystallize. I can't be responsible for your results though, I have worked in laboratories for around 10 years. If you aren't familiar with laboratory work and confident of your laboratory technique, I would advise against doing it at all without a kit.
(also this might be a better question for the bodybuilding chemistry forum, though I do understand that many more people read this section)
just what are you suggesting here? extract with diethylether? good thing you've got strong arms cuz youre gonna be shaking for hours to dissolve it out of a methanol solution, and its never gonna separate. the whole purpose of the water drip is the precipitate the tp so it can be filtered, you'd need literally litres if not gallons of ether at that temperature to dissolve the ppt'd tp.
hydrolyze the base, ok, that forms propanoic acid which then reacts to use up your carefully measured sodium hydroxide thus not allowing it to react with the phenolic hydroxyl leaving estrogen in the final product.
alcohol-water is not a recrystallization with respect to tp it is a precipitation, to get xtals you must dissolve and use cooling to bring out the clear needles.
prepatory columns are generally used in synthesis, you already have pure tp you are just simply partitioning it based on solubility from the testp, its already pure, you don't even need to recrystallize it , fun to use big words and terms though. just kidding around lol
kits are unneccessary, this is just too easy and you can make a better kit on your own thats less likely to cleave the propionate ester by utilizing calcium hydroxide instead of sodium hydroxide, it just may take a little longer to dissolve the calcium hdyroxide prior to use. buy the following:
-distilled water
-methyl hydrate, methanol, same shit different name
-calcium hydroxide, plant store, remember it has twice the ability to form the salt with phenolics as lye so only half the relative amount is needed
-coffe filters or a manual centrifuge
-a one litre pyrex beaker
-a hot plate
to figure out how much of each thing you need go to google and type in molecular weight of test prop, then calcium hydroxide, then estrogen or estradiol etc.. and finally sodium hydroxide. molecular weight makes everything relative, like a handicapping. so to find out the calcium hydroxide you need:
grams of estrogen in sample to get rid of * 1/molecular weight of estrogen = number moles you have X
X moles estrogen * molecular weight of calcium hydroxide in grams/mole = grams needed of calcium hydroxide BUT remember you only need half that as calcium hdyroxide has two hydroxides in every molecule so it does twice the work per mol so cut that number in half and thats the grams of calcium hydroxide needed. if you use exact amounts there is no reason to fear the cleavage of tp as the reactioin with the phenolic estro is thermodynamically favorable and happens first leaving no calhydrox for cleaving the tp.
for methanol you use whatever it takes to dissolve your material.
everyone here can do this without needing to buy a magic dissolving solution (i'm sorry i find that so offensive), if you can negotiate the internet you can make your own kit and effectively utilize it