4,5,9,10-tetrabromo-2,7-ditert-butylpyrene

2,7-ditert-butyl-4,5,9,10-tetrahydropyrene

2,7-Di-tert-butyl-1,2,3,6,7,8-hexahydropyren

2,7-di-t-butyl-4,5-dihydropyrene

2,7-Di-tert-butyl-1,2,3,4,5,12-hexahydropyren