The warning letter lists the three following observed specific deviations:
- Failure to have adequate cleaning procedures that define and justify acceptance criteria for residues.
- Failure to construct equipment so that surfaces that contact raw materials, intermediates, or API do not alter the quality of API beyond established specifications.
- Failure of the quality unit to ensure that there is stability data to support retest or expiry dates and storage conditions on API and/or intermediates.
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