Plural of alkyl; chemical groups made of carbon and hydrogen atoms that form the backbone of many organic compounds.
From alkane (a hydrocarbon) + -yl (chemical suffix meaning 'group'). The term alkane comes from alkali, originally referring to the ashes of seaweed. The -yl suffix comes from Greek hyle meaning 'matter' or 'substance.'
Alkyls are like molecular building blocks that chemists can swap in and out of larger molecules to change their properties—it's how scientists fine-tune everything from medicines to plastics, sometimes just by moving one alkyl group around.
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