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                   2,3-Dihydroxybenzoic acid
                   2,3-dimethoxybenzoic acid
                   3,4-Dihydroxybenzaldehyde
                   3,4-dimethoxybenzoic acid
                   3,4-Dihydroxycinnamic acid
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                 2,3-Dihydroxybenzoic acid      2,3-dimethoxybenzoic acid      3,4-Dihydroxybenzaldehyde
                 3,4-dimethoxybenzoic acid      3,4-Dihydroxycinnamic acid      2,4-Dihydroxybenzoic acid
                 Phenanthrenequinone      3-Hydroxy-4-methoxybenzaldehyde      4-Hydroxy-3-methoxybenzoic acid
                 2-Nitro-5-methoxymethylbenzene      Succimide      4-Methylpropiophenone
                  Tetraethyl orthocar bonate      4-hydroxy-3-methoxy Methy Benzoate      2-Chloro-5-Chloro-Methyl Pyridine
                 3,4,5-Trimethoxycinnamic acid      Propyzamide       4-Amino-2,6-dimethoxypyrimidine (SDM)
                 Dess-Martin periodinane    

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