Methine group
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![Methine](http://upload.wikimedia.org/wikipedia/commons/thumb/7/79/Methine.svg/220px-Methine.svg.png)
A methine group or methine bridge is a functional group =CH−. It consists of a carbon bound by one double bond and 2 single bonds, where one of the single bonds is to a hydrogen.
A methine group or methine bridge is a functional group =CH−. It consists of a carbon bound by one double bond and 2 single bonds, where one of the single bonds is to a hydrogen.