Pyridine series

4-Aminobenzoic acid 4-aminophenyl ester (APAB)

9,9-dimethyl-9H-fluorene-2,7- diamine (S-A-1)

1,2,3,4-Butanetetracarboxylicdianhy dride (BDA)

9,9-Bis(3,4-dicarboxyphenyl) fluorine Dianhydride (BPAF)

4.4-oxybisbenzoic chloride (DEDC)

3,4'-Oxydianiline (3,4'-ODA) 2657-87-6

4,4'-Bis(3-aminophenoxy) diphenyl sulfone (BAPS-M)

2-(4-minophenyl)-1,3-benzoxazol-5- amine (APBOA)

2,2-Bis(3-amino-4-hydroxylphenyl) propane (BAP)