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Wiktionary
dimethylbutane

n. (context organic compound English) Either of two aliphatic hydrocarbons ''2,2-dimethylbutane'' and ''2,3-dimethylbutane'' that are isomers of hexane

Wikipedia
Dimethylbutane

Dimethylbutane (DMB) may refer to:

  • 2,2-Dimethylbutane
  • 2,3-Dimethylbutane