Naproxen, 250mg

Vitamin A acid,neat,neat,100mg

4-Aminobiphenyl, 100 µg/ml, Acetonitrile, 1ml

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