2-azido-1,3-bis(1-ethoxyethoxy)-4-E-D-erythro-octadec-4-ene

1,3-bis(1-ethoxyethoxy)-2-(methylsulfonyloxy)-4-Z-D-threo-octadec-4-ene

1,3-bis(1-ethoxyethoxy)-2-(methylsulfonyloxy)-4-E-D-threo-octadec-4-ene