Usage History of 'isobutyl'

The following chart shows how frequently 'isobutyl' appeared in printed materials over time. For example, the word 'isobutyl' occurred 2 times in books in 1866 and 1,808 times in 2008. From 1866 to 2008, the word 'isobutyl' was used a total of 138,886 times in books scanned by Google. See Reference: Google Ngram project.

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