Technical notes
Process observations and stock announcements published by WesynTech, translated from the company's own Chinese-language originals. No marketing filler — if a note is here, someone ran the experiment.
Process note
Removing trace metal residues with dithiocarbamate scavengers
Organometallic reagents and homogeneous catalysts leave metal behind. A water-treatment reagent class turns out to strip copper from an organic stream down to single-digit ppm.
6 April 2022
Stock announcement
7-(Difluoromethyl)-1,2,3,4-tetrahydroquinoline available from kilogram stock
A fluorinated tetrahydroquinoline intermediate held in kilogram quantities, offered to new and existing customers.
13 March 2022
Two notes were published on the former site; both are reproduced here in full. Nothing has been added.
Have a process problem like these?
Metal residues, a step that will not scale, an impurity that appears only in the big reactor — those are process R&D conversations.