Here's what rhymes with hydroxypyrrole.
role roll whole soul coal goal hole pole sole bowl fol mole poll toll stroll knoll shoal dole droll foal bole boll thole troll vole bedroll kohl tole prole dolour patrol stole parole scroll enroll unroll oriole rissole skoal control systole extol vacuole arteriole cajole petiole camisole cubbyhole maypole extoll innersole glycerol casserole condole pigeonhole beanpole profiterole quadrupole buttonhole decontrol