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Benzotriazole (BTZ Series)
![4,7-dibromo-2-(2-butyloctyl)-2H-benzo[d]](http://www.cal-os.com/wp-content/uploads/2016/04/BTZ001-WB.png "BTZ001, BTZ-C12(Br)")
![4,7-dibromo-2-(2-butyloctyl)-5,6-difluoro-2H-benzo[d][1,2,3]triazole, CAS#: 1283099-24-0](http://www.cal-os.com/wp-content/uploads/2016/04/BTZ002-WB-1.png "BTZ002, DFBTZ-C12(Br)")
![4,7-dibromo-2-(2-ethylhexyl)-5,6-difluoro-2H-benzo[d][1,2,3]triazole](http://www.cal-os.com/wp-content/uploads/2016/04/BTZ003-WB.png "BTZ003, DFBTZ-EH(Br)")
