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thanks- so ultimately similar concept as to washing away pseuda pills w/ anhydrogenous acetone. but instead this with hotwater and seperate stage w toulene and finally methylated- do you mean methy hydrate or dcm type? Cheers,

Hello Lately I've notice Sudafed gone completely from shelves. Only product w pseudo HCl is allegra- it's other compound being fexofenadine which is also HCl I believe? Is it not possible to isolate them ? Many thanks and stay safe y'all.