According to the active pharmaceutical ingredient (API) manufacturer of sapropterin, the raw material quality control measures involve strict testing and verification of the API and its intermediates through a multi-step process, including but not limited to, [1] analytical testing of the chemical and physical attributes of each lot, [2] and inspection of the manufacturing processes at the vendor site.
The FDA requires API manufacturers to establish a robust quality control program for ensuring the purity, potency, and quality of their APIs. This includes implementing proper sampling and testing procedures for raw materials and intermediates, as well as thorough review of all data related to the manufacturing and quality control processes. [3]
Additionally, the manufacturer of sapropterin undergoes regular audits by regulatory authorities and third-party inspectors to ensure adherence to cGMP [4] (Current Good Manufacturing Practices) guidelines. These audits verify that the manufacturer has a robust quality control program in place for its raw materials, including proper identification, sampling, testing, storage, and handling [5].
For more information on the specific quality control measures applied to sapropterin's raw materials, please refer to the FDA's cGMP guidelines and API manufacturers' guidelines [6].
Sources:
[1] DrugPatentWatch.com - API quality control measures
[2] FDA guidance on API quality control
[3] FDA cGMP guidelines for APIs
[4] https://www.fda.gov/regulatory-information/search-fda-guidance-documents/cgmp-good-manufacturing-practices
[5] https://www.fda.gov/ucm/groups/fda-public/@fdacgmp/documents/web%20content/ucm209938.pdf
[6] https://www.fda.gov/Drugs/GuidanceComplianceRegulatoryInformation/GoodManufacturingPractices/ucm110885.htm