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This is some older then 28578. From asia afcourse haha. You can check the structure on chemicalbook

I know the 28578 methode. But it doesnt work on this one. This doesnt dissolved into water and NaOH.

A picture for example

See title

Dear Forum mates, Nice to see this forum. I never know there was a kind of forum like this 😋. Maybe somebody can help me to convert above PMK powder. Its a yellow color. They told me to convert it with ethanol and HCI. But without any good end product. Hope for any reply. Kind regards from...