The best replacement for reagents is reactants.

The best alternatives to reagents are rated as following:
★★★★★  reactants

Your alternative for reagents is not listed? Suggest!
Speaking about reagents, one probably shouldn't forget about esters.

Other search terms related to reagents and their ratings are:
★★★★★ esters
★★★ ketones
★★★ carboxylic acids
★★ epoxides
★★ alkynes
★ alkyl halides
nitriles
You have in mind a companion for reagents and it is not yet here? Propose!



Google Trends

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reagents
reactants