4,7,10-Trioxatridecane-1,13-diamine4246-51-933 % similar Ethylene oxide75-21-833 % similar Nysted reagent41114-59-431 % similar Dicyclohexano-18-crown-616069-36-630 % similar 1,4-Butanediol diglycidyl ether2425-79-830 % similar