1,3-Dioxolane, 2-(7,7-dimethoxy-2-methylbicyclo(2.2.1)hept-5-en-2-yl)- 2-(2-Dioxolanyl)-2-methyl-7,7-dimethoxy-5-norbornene 2-Norbornen-7-one, 5-(1,3-dioxolan-2-yl)-5-methyl-, dimethyl acetal 31969-68-3 5-(1,3-Dioxolan-2-yl)-5-methyl-2-norbornen-7-one dimethyl acetal