PBBs are used as flame retardants of the brominated flame retardant group. Workers often inhale lead, cadmium, dioxins, furans, phthalates and brominated flame retardants. Firemaster 550 is one of Chemtura's brominated flame retardants. Workers in formal industry are also exposed to more brominated flame-retardants than reference groups. It uses a flame-retardant brominated epoxy. Bromine atoms are even more efficient catalysts; hence brominated CFCs are also regulated. Brominated dioxins and biphenyls have similar properties, but they have been studied much less. Brominated compounds are unknown as metabolites from terrestrial fungi. Much higher levels may indicate exposure to brominated chemicals (e.g. methyl bromide). Chemicals found included styrene, acetophenone, and brominated substances, which were not permitted as food additives. Several brominated anthroquinone derivatives are used commercially. The term decaBDE alone refers to only decabromodiphenyl ether, the single "fully brominated" PBDE. Some Gatorade flavor variations used to contain brominated vegetable oil as a stabilizer. The organic synthesis route is also very scalable as above (brominated route). Prior to 1988, the original formula of Limca contained brominated vegetable oil (BVO).