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2-Acetyl-3-methyl pyrazine
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2-Acetyl-3-ethyl pyrazine
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2-Acetyl pyrazine
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2-Methoxy-3-isobutyl pyrazine
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2-Methoxy-3-secbutyl pyrazine
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2-Methoxy-3-isopropyl pyrazine
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2-Isopropoxy-3(5/6)-methyl pyrazine
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2-Propoxy-3（5/6）- methyl pyrazine
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2-Methylthio-3（5/6）- methyl pyrazine
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2-Furfurylthio-3（5/6）- methyl pyrazine
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