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demethylate
Among these metabolites, the active sympathomimetic is norephedrine.
Lac-NCTD was synthesized with ethanediamine as truss arm.

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Open the tool →去甲 (qù jiǎ) means “demethylation, demethylate”.
去甲 is pronounced qù jiǎ in Mandarin Chinese.
“demethylation” is 去甲 (qù jiǎ) in Chinese.
This page has 2 example sentences using 去甲, each with pinyin and an English translation.