Naphthalenetetracarboxylic dianhydride81-30-1100 % similar Perylenetetracarboxylic dianhydride128-69-881 % similar 1,8-Naphthalic anhydride81-84-563 % similar Phthalic anhydride85-44-962 % similar Bpda2420-87-358 % similar 4-Chloro-1,8-naphthalic anhydride4053-08-155 % similar 4,4′-Oxydiphthalic anhydride1823-59-254 % similar 4-Amino-1,8-naphthalic anhydride6492-86-053 % similar 4-Bromo-1,8-naphthalic anhydride81-86-753 % similar 2,3-Naphthalenedicarboxylic anhydride716-39-252 % similar 4-Chlorophthalic anhydride118-45-652 % similar 4-Methylphthalic anhydride19438-61-052 % similar Benzophenonetetracarboxylic dianhydride2421-28-552 % similar 4-Fluorophthalic anhydride319-03-952 % similar 4-Bromophthalic anhydride86-90-852 % similar 3,3′,4,4′-Diphenyl sulfone tetracarboxylic dianhydride2540-99-048 % similar 4,5-Dichlorophthalic anhydride942-06-348 % similar Trimellitic anhydride chloride1204-28-047 % similar Ethylene glycol bis(anhydrotrimellitate)1732-96-347 % similar 4-tert-Butylphthalic anhydride32703-79-047 % similar