(T-4)-Trihydro(morpholine-κN4)boron4856-95-5100 % similar 1,4-Dioxane123-91-133 % similar 12-Crown-4294-93-933 % similar 15-Crown-533100-27-533 % similar Ethylene oxide75-21-833 % similar Di-N-propyl ether111-43-332 % similar