I’m conducting a stability test on levodopa using 0.1mol/L HCI as the solvent,but on the first day and the third day, the drug content exceeded 100%. May I ask what is the solution?
Could you describe your analysis method? Are you using an UV/Vis or HPLC? How is your test-sulution and how are your standart solutions prepared?
usually the drug molecules content can vary in +/- perentage of the labelling amount. If its within the specified quantitites its okay
Generally, it can be acceptable if within +-10%.
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