1,3-Dithiane, urea deriv. (9CI) 60285-33-8 NSC 207115 Urea, 1-(2-chloroethyl)-3-(2-methyl-m-dithian-5-yl)-1-nitroso-, S,S,S',S'-tetraoxide, (E)- trans-1-(2-Chloroethyl)-3-(2-methyl-m-dithian-5-yl)-1-nitrosourea S,S,S',S'-tetraoxide