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TIC of all compounds in the quality control solution at 15 ng/mL in water after LC-QTOF analysis. Quality control solution contains a total of eight different fentanyl related compounds in addition to fentanyl. six of these compounds are fentanyl analogs, one is a synthetic precursor (4-ANPP), and one is a metabolite (norfentanyl). Naloxone is also studied due to its usage as treatment against opioid exposure.
