p. 2355 - 2362
(2007/10/02)3,5-Dimethoxy-4-(2-methoxy-6-methoxycarbonyl-benzoyl)-benzoic acid methyl ester
2-hydroxy-6-methoxycarbonylphenyl 2-hydroxy-6-methoxy-4-methoxycarbonylphenyl ketone
4-carboxy-2,6-dimethoxyphenyl 2'-carboxy-6'-methoxyphenyl ketone
4-carboxy-2-hydroxy-6-methoxyphenyl 2-carboxy-6-hydroxyphenyl ketone
2,6-dimethoxy-4-methylbenzoyl chloride