1-Acetyl-3-phenylethylacetylurea 13402-08-9 Acetylpheneturide BRN 1987746 Crampol Crampole EINECS 236-493-6 N-((Acetylamino)carbonyl)-2-phenylbutanamide N-((Acetylamino)carbonyl)-alpha-ethylbenzeneacetamide N-alpha-Ethylphenylacetyl-N'-acetyl urea P-398 Urea, 1-acetyl-3-(2-phenylbutyryl)-