2,3-NAPHTHALENEDICARBOXYLIC ANHYDRIDE

2,3-O-ISOPROPYLIDENE-BETA-D-RIBOFURANOSYLAMINE P-TOLUENESULFONATE SALT

2,3-O-ISOPROPYLIDENE-D-ERYTHRONOLACTONE

2,4,4'-TRIMETHOXYBENZOPHENONE

6-BROMO-2,4,5-TRICHLOROPHENOL

2,4,6-TRIBROMO-3-METHYLPHENOL