1,3,5-Triazine-2,4,6-triamine, N,N-di-2-propenyl- 91-77-0 DAM Diallylmelamine Melamine, N2,N2-diallyl- N,N-Diallylmelamine N2,N2-Diallylmelamine NSC4420 U-7720 Upjohn 7720