> Butyric bee repellents were improved by using instead of butyric acid, its
> dehydration product butyric anhydride (created by removing a water molecule
> to join two 4-carbon acid molecules into an 8-carbon anhydride (meaning
> "without water").

Thanks for the explanation.  Clears up my confusion.  I was unaware
that an 8 carbon and 4 carbon molecule could share the same name.

Stan

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