Hey Nexus! A bit odd' posting this but seems it is not against the rules.

I'm figuring out how to clean up good ol' dimenhydrinate. As far as I understand, this is combination of =~50% diphenhydramine with rest 8-chlorotheophylline, a chlorinated derivative (e.g. caffeine).

What would be the best way to clean/wash 8-chlorotheophylline from dimenhydrinate which would result in pure diphenhydramine.

Current set:

* A few packs of Aviomarin* in crushed [powder] form
* Dissolve DHT powder in water and non-polar solvent (e.g. naptha, n-hexane ..)
* Prepare & add equimolar ratio of base to the solvent
* Stir above mixture for few hours
* Evap**

Few tips told me, instead of evap, adding hydrochloric acid might may cause diphen* to precipitate.

Any other methods; can you confirm above procedure? [all info taken from interwebz and prior dmt x)

Appreciated and enjoy your time,

Bumping for the sake of clarity. I'm really not sure about my chemistry knowledge so any input form chemist would be greatly appreciated.

Seems I made it to work! Simple A/B as presented above.

Quick album
https://imgur.com/a/18JvYmt


Final product