Freebase vs other forms.

[Public//Enemy]

Im wondering is there any way to tell via the chemical structure of a compound what the end results of the freebase would be?

eg. would it be a liquid like MDPV? or rock up like aMT?

As far as I can make out the only way sure fire way is knowing the melting point I assume. Is there a way to work this out though without knowing the melting point?

 

[Alcyone]

You can guesstimate the melting point on the basis of molecular weight, presence of functional groups and extrapolating known melting points of (closely) related compounds.

 

[vecktor]

whether a freebase is an oil is also dependent on the purity, impure solids are often oils.
synthetic DMT freebase is often an oil until purified
DOB freebase is reported as an oil but when pure it is a low melting point white solid.
I

 

[Alcyone]

^ Good point, I didn't think about that. Unlike some of their salts, free base forms of amines are generally a bitch to recrystallize, and presence of residual solvents and impurities may lower the actual melting point to the extent that you're stuck with an oil or sticky goo, even if your substance should theoretically be a solid at room temperature. Exceptions exist, of course. Oxymorphone base crystallizes beautifully from ethanol/ethyl acetate, for instance.

 

[Public//Enemy]

would 6-(2-aminopropyl)benzofuran be a solid at room tempreture? be better than a HCl version im sure.

 

[sekio]

Freebase phenethylamines/amphetamines are generally horribly caustic shit, the HCl is almost always the better thing to work with.