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tetramethylpyrazine · Liqustrazine · chuanxiongzine
Tetramethylpyrazine, also known as ligustrazine, is a chemical compound found in natto and in fermented cocoa beans. When purified, tetramethylpyrazine is a colorless solid. It is classifed as an alkylpyrazine.
2-methoxy-3-isobutylpyrazine · 3-isobutyl-2-methoxypyrazine
3-Isobutyl-2-methoxypyrazine (2-isobutyl-3-methoxypyrazine also known as Grindstaff pyrazine) is a methoxypyrazine that is very similar to isopropyl methoxy pyrazine except that the alkyl side-group contains an isobutyl group attached to the carbon alpha to the methoxy sidegroup instead of an isopropyl side-group at that same carbon position.