Tetraiodophthalic anhydride632-80-4100 % similar Tetrachlorophthalic anhydride117-08-844 % similar Tetrabromophthalic anhydride632-79-144 % similar Tetrafluorophthalic anhydride652-12-044 % similar 3-Iodophthalic anhydride28418-88-442 % similar 3,6-Dichlorophthalic anhydride4466-59-541 % similar 3,6-Difluorophthalic anhydride652-40-441 % similar 3-Methylphthalic anhydride4792-30-738 % similar Tetraphenylphthalic anhydride4741-53-137 % similar Naphthalenetetracarboxylic dianhydride81-30-135 % similar Phthalic anhydride85-44-935 % similar 3-Chlorophthalic anhydride117-21-534 % similar 3-Hydroxyphthalic anhydride37418-88-533 % similar Furo(3,4-b)pyrazine-5,7-dione4744-50-733 % similar 3-Fluorophthalic anhydride652-39-133 % similar Benzoic anhydride93-97-033 % similar 1,2-Naphthalenedicarboxylic anhydride5343-99-732 % similar 1,3-Dioxo-2-isoindolineaceticacid6296-53-332 % similar 4-Methylphthalic anhydride19438-61-031 % similar 4,5-Difluorophthalic anhydride18959-30-331 % similar