Methyl 4,6-di-O-acetyl-2,3-didehydro-2,3-dideoxy-α-D-erythro-pyranoside

methyl 3-methoxy-5-oxocyclohex-3-ene-1-carboxylate

1-Chloro-4-[(4-methoxyphenyl)sulfonyl]benzene

dimethyl 2-[(2,4-dinitrophenyl)hydrazinylidene]pentanedioate

dimethoxy-methyl-trimethylsilylsilane