3a,4,5,6,7,7a-Hexahydro-4,7-methanoindene-5-carboxaldehyde diethyl acetal 4,7-Methano-1H-indene, 5-(diethoxymethyl)-3a,4,5,6,7,7a-hexahydro- 4,7-Methano-1H-indene-5-carboxaldehyde, 3a,4,5,6,7,7a-hexahydro-, diethyl acetal 5-(Diethoxymethyl)-3a,4,5,6,7,7a-hexahydro-4,7-methano-1H-indene 67633-92-5 EINECS 266-793-2