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Alkoxy
Introduction
In chemistry, the alkoxyl group is an alkyl (carbon and hydrogen chain) group linked to oxygen thus: R-O. The range of alkoxy groups is as great, the simplest being methoxy (-OCH3). An ethoxy group (-OCH2CH3) is found in the organic compound phenetol, C6H5OCH2CH3 which is also known as ethoxy benzene. Related to alkoxy groups are aryloxy groups.
Alkoxides are derivatives of alcohols where the proton has been replaced by a metal, typically sodium.