1-Azabicyclo(2.2.2)octane, 3-(6-chloropyrazinyl)-, (Z)-2-butenedioate 144860-79-7 3-(2-6-Chloropyrazinyl)-1-azabicyclo(2.2.2)octane 3-(6-Chloropyrazinyl)-1-azabicyclo(2.2.2)octane (Z)-2-butenedioate L 689660 L-689,660 L-689660