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The main low molecular weight phenol (LMWP) identified in oaks: acids: (a) ellagic, (b) gallic, (c) syringic, (d) vanillic, (e) ferulic; aldehydes: (f) coniferyl, (g) sinapic, (h) syringic, (i) vanillin; coumarins: (j) scopoletin, (k) aesculetin. (https://en.wikipedia.org/wiki/).
