4.
Name: 1,3,4-Metheno-1H-cyclobuta(cd)pentalene, 1,1a,2,3,3a,4,5,5a,5b,6-decachlorooctahydro-, cis-
CAS: 81446-82-4



5.
Name: m-Phenylenediamine, 2-(4-(2,3-dicarboxyphenoxy)phenyl)-2-(4-(3,4-dicarboxyphenoxy)phenyl)propane dianhydride polymer
CAS: 72066-72-9


