1-(3-Ethyl-5-isopropyl-5-methyl-2-oxotetrahydro-3-furoyl)-3-phenylurea 28755-10-4 Urea, 1-(3-ethyl-5-isopropyl-5-methyl-2-oxotetrahydro-3-furoyl)-3-phenyl- alpha-(N-Phenylallophanyl)-alpha-ethyl-gamma-isopropyl-gamma-valerolactone