3-methylenecyclobutanecarboxylic acid methyl ester
3-Methoxymethyl-cyclobutan-dicarbonsaeure-(1,1)-diaethylester
3-Methoxymethyl-cyclobutan-dicarbonsaeure-(1,1)
trans-3-Methoxymethyl-cyclobutan-carbonsaeure-(1)
3-Brommethyl-cyclobutancarbonsaeure-methylester