1,4,5,6,8-pentamethoxy-naphthalene-2,3-dicarboxylic acid dimethyl ester

[1,4,5,7,8-pentamethoxy-3-(2-nitro-ethyl)-naphthalen-2-yl]-methanol

3-(tert-butyl-dimethyl-silanyloxymethyl)-1,4,5,6,8-pentamethoxy-naphthalene-2-carbaldehyde