1-Benzolsulfonyl-3-butylurea 1-Butyl-3-(phenylsulphonyl)urea 3149-00-6 4-11-00-00074 (Beilstein Handbook Reference) BRN 2217201 EINECS 221-578-2 N-Benzene sulfonyl-N'-n-butyl uree [French] PHENBUTAMIDE Urea, 1-butyl-3-(phenylsulfonyl)-