Reagents rhymes with:
agent's, agents, agents', agent's, agents, agents', astringents, contingents, detergents, exigents, indigents, insurgents, insurgents', legent's, pageants, regents, sergeants, tangents
Reagents sounds like:
razzmatazz, reaganites, reassignments, recommends, recounts, regents, regiments, rescinds, resendes, resendez, resendiz, resents, resonates, rezendes, richmond's