1-(2-Chloroethyl)-3-(2,2,6,6-tetramethyl-4-piperidinyl)urea 42471-45-4 5-22-08-00166 (Beilstein Handbook Reference) BRN 0478131 NSC 168443 Urea, 1-(2-chloroethyl)-3-(2,2,6,6-tetramethyl-4-piperidinyl)-