Clarithromycin, >98%, 1g

5,6-Chrysenequinone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 2051-10-7

2,3,3',4'-Tetrachlorobiphenyl (56)

ISO 17495 Internal Standard Stock Solution 2 Internal standards, each 10µg/mL in acetone; unit: 1x5mL 2061.6 2,4-Dibromophenol [615-58-7] 2060.6 2,4,6-Tribromophenol [118-79-6] The following compounds are suggested as alternative I