A class of organic compounds that contain two methylene groups connected by a double bond, resulting in a reactive, highly strained structure.
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1H-Indole-2-carboxaldehyde, 1-[(4-methoxyphenyl)sulfonyl]-3-methyl-
methyl 12 <(p-methoxyphenyl)sulfonyl>-6-methyleneamino-11H-indolo <2,3-a> carbazole-11-carboxylate
