N’-(4-chlorophenyl)-N-methyl-N-(1-methyl-2-propyn-1-yl)urea, (RS)-3-(4-chlorophenyl)-1-methyl-1-(1-methylprop-2-ynyl)urea, BUTURON, rac-N-[(2R)-but-3-yn-2-yl]-N’-(4-chlorophenyl)-N-methylurea, 1-(4-chlorophenyl)-3-methyl-3-but-1-yn-3-yl-urea, Buturon [BSI:ISO], HS 95, Arisan, Eptapur, Butyron, 3-(4-chlorophenyl)-1-methyl-1-(1-methyl-2-propynyl)urea, EINECS 223-187-2, 1-(but-3-yn-2-yl)-3-(4-chlorophenyl)-1-methylurea, Caswell No. 207E, 1-but-3-yn-2-yl-3-(4-chlorophenyl)-1-methylurea, 3-(4-chlorophenyl)-1-methyl-1-(1-methylprop-2ynyl)urea