6262-23-3 Formamide, N,N'-(4-methyl-1,3-phenylene)bis- Formamide, N,N'-(4-methyl-m-phenylene)bis- Formamide, N,N'-2,4-tolylenebis- N,N'-2,4-Tolylenebisformamide N,N'-Diformyl-2,4-tolylenediamine NSC8623