>>40028042
>>40028173
Raw 17β-estradiol is legal in most countries as far as I know. Premade pills and vials are seized because they are for unlicensed human use.
Quite frankly, buying a $20 cream to extract a tiny bit of estriol isn't viable. At that point you might as well synthesis estradiol from cholesterol.
Most companies start with basedbean sterols, turn them into boldione, and then turn that into estradiol.
None of this stuff is simple though. You'd need to learn a ton before even thinking about attempting it.