Hydantoin suna ne da ke nufin wani fili marar launi na crystalline tare da tsarin sinadarai C3H4N2O2, wanda ya ƙunshi zobe mai mambobi biyar wanda ya ƙunshi ƙwayoyin carbon guda huɗu da atom ɗin nitrogen guda ɗaya tare da ƙungiyoyin carbonyl guda biyu. Ana amfani da Hydantoin wajen samar da magunguna, sinadarai na noma, kuma a matsayin tsaka-tsakin sinadarai a cikin haɗin gwiwar kwayoyin halitta. Hakanan ana amfani dashi azaman sinadari a cikin wasu kayan kwalliya da samfuran kulawa na sirri.