63886-70-4 N-(2-(Dichlorophosphonyl)vinyl)-N'-(5-methoxy-2-pyrazinyl)urea Phosphine oxide, dichloro((3-(5-methoxy-2-pyrazinyl)ureido)vinyl)- Urea, 1-((dichlorophosphoryl)vinyl)-3-(5-methoxy-2-pyrazinyl)-