72271-68-2
6-methyl-2-(toluene-4-sulfonyloxy)-cycloheptatrienone
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60998-70-1
4-methylcyclohepta[b]furan-2-one
16939-67-6
2-chloro-6-methyl-cycloheptatrienone
108170-50-9
4-methyl-2-oxo-2H-cyclohepta[b]furan-3-carboxylic acid methyl ester