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The chemical compound (exactly 2-methoxy-3,5-dimethylpyrazine, abbreviation MDMP) was isolated by AWRI (Australian Wine Research Institute) in 2004. It is found in corks and negatively affects the aroma of wines. They smell of fresh cork, wood or dust, which is considered a wine defect from the perception threshold or quantity of 2 to 4 ng/l. In Australia this is described as "Fungal must". It is most probably the second most common cause of cork taint in Australian wines, next to trichloroanisole (TCA). See also under methoxypyrazines

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