Ethyl 4-isocyanatobenzoate was used in the preparation of cellulose carbamate and ester derivatives. It was also used in the preparation of ethyl 4-(3-(4-oxo-6-tridecyl-1,4-dihydropyrimidin-2-yl)ureido)benzoate and ethyl 4-(2-oxocyclohexanecarboxamido)benzoate.