Nysted reagent41114-59-4100 % similar Tetrahydrofuran109-99-940 % similar Oxetane503-30-033 % similar Tetrachlorobis(tetrahydrofuran)titanium31011-57-131 % similar Pentyl ether693-65-231 % similar 4,9-Dioxa-1,12-dodecanediamine7300-34-731 % similar Zinc bromide7699-45-830 % similar