Post #5 answers the question as asked. The question underneath it is different.
Attributing a new peak is one of those subjects where the general answer and the answer for a specific case diverge, and the thread will go in circles until someone says which one is being asked for.
Narrowing post #9, because the general version has more than one answer.
On Attributing a new peak: the maintained page in the documentation commons covers the general case with citations and a review date, which is more reliable than any reply here including this one.
Storage-related degradation and synthesis-related impurity look different on a chromatogram. A growing oxidation peak over time is not a manufacturing finding.
Worth separating Attributing a new peak as a question about the compound from Attributing a new peak as a question about the documentation. They get answered by different people and only one of them is answerable here.
Read the full topic (20 posts)
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Attributing a new peak: degradation product or excipient?
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