A chemical group consisting of carbon and hydrogen atoms, derived from an alkane by removing one hydrogen atom, forming the backbone of many organic compounds.
From German 'Alkyl', itself derived from 'alkohol' (alcohol) plus the chemical suffix '-yl'. Coined by German chemist Friedrich August Kekulé in the mid-1800s as organic chemistry was being systematically organized.
Alkyl groups are like LEGO bricks in chemistry—you can attach them to almost anything to change how a molecule behaves. Pharmaceutical companies spend millions testing different alkyl attachments because tiny changes can make a compound useful or useless!
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