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                Thiophenes
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                > 3-Thiophenecarboxaldehyde
                > 3-Thiophenecarboxylic acid
                > 5-Methyl-2-thiophenecarboxaldehyde
                > 2-Thiophenecarboxylic acid
                > 2-Thiophenecarbonyl chloride
                > 2-Thiophenemethanol
                > 2-Acetylthiophene
                > 2-Chloro-5-nitropyridine
                > 2-Chloro-3-Methylthiophene
                > 3-Bromothiophene
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