N-Trimethylsilylmethyl-N-nitrosourea , its cas register number is 39482-21-8. It also can be called N-Nitroso-N-((trimethylsilyl)methyl)urea ; N-Nitrosotrimethylsilylmethylurea ; and Urea, N-nitroso-N-((trimethylsilyl)methyl)- .