1-Butyl-2-undecyltetrahydropyrimidine 5327-73-1 NSC3394 Pyrimidine, 1-butyl-1,4,5,6-tetrahydro-2-undecyl- Pyrimidine, 1-butyl-2-hendecyl-1,4,5,6-tetrahydro- WLN: T6M CNTJ B11 C4