(8Z)-8-Hexa-2,4-diynylidene-4,9-dioxaspiro[4.4]non-6-ene

2-methoxyethyl 4-methylbenzenesulfonate ; 4-toluenesulfonic acid2-methoxyethyl ester ; 2-methoxy-ethano 4-methylbenzenesulfonate ; ethylene glycol methyl ether tosylate ; 3-oxabutyl tosylate ; 2-methoxyethyl-p-toluenesulfonate (pts-mc) 4-toluenesulfonic acid 2-methoxyethyl ester ; ethanol, 2-methoxy-,1-(4-methylbenzenesulfonate) ; p-toluenesulfonic acid b-methoxyethyl ester ; 2-methoxyethyl tosylate ; 2-methoxyethyl toluenesulfonate ; ethanol, 2-methoxy-,p-toluenesulfonate (7ci,8ci) ; 2-methoxyethanol tosylate ; p-toluenesulfonicacid 2-methoxyethyl ester ; 1-tosyl ethoxymethane ; 2-methoxyethyl p-toluenesulfonate ; 4-methylbenzenesulfonic acid 2-methoxyethyl ester ; b-methoxyethyl p-toluenesulfonate ; ethanol,2-methoxy-, 4-methylbenzenesulfonate (9ci) ; .beta.-methoxy-4-ethyl toluene sulfonate ; 2-methoxyethyl p-tolylsulfonyloxy ester