24241-85-8 Bis(1-methylethyl) (2,3,5,6-tetrachloro-4-pyridinyl)phosphoramidate Dipropyl (2,3,5,6-tetrachloro-4-pyridyl)phosphoramidate Phosphoramidic acid, (2,3,5,6-tetrachloro-4-pyridyl)-, dipropyl ester