(Nitrosomethylphenyl)urea 1-Methyl-1-nitroso-3-phenylurea 21561-99-9 3-Phenyl-1-methyl-1-nitrosoharnstoff NSC68456 Urea, 1-methyl-1-nitroso-3-phenyl- Urea, N-methyl-N-nitroso-N'-phenyl- WLN: ONN1&VMR