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Synthesis of [1-11C]Butanol via a facile solid phase extraction protocol
Nicole N Waterhouse1, Paresh J Kothari1, Marybeth Dooley1
1Citigroup Biomedical Imaging Center, Weill Cornell Medicine, New York, NY, USA.
Summary
A new, easy method for making [1-11C]butanol, a brain blood flow imaging agent, was created. This technique quickly purifies the compound, ensuring high purity and yield for medical use.
Area of Science:
- Radiochemistry
- Nuclear Medicine
- Pharmacology
Background:
- Regional cerebral blood flow (rCBF) is crucial for diagnosing neurological conditions.
- Developing reliable imaging agents for rCBF is essential for accurate diagnosis.
- Carbon-11 labeled tracers offer advantages in positron emission tomography (PET) imaging due to their short half-life.
Purpose of the Study:
- To develop a facile and efficient synthesis method for [1-11C]butanol.
- To ensure the radiochemical and chemical purity of the synthesized [1-11C]butanol.
- To prepare a sterile, pyrogen-free final product meeting pharmacopeial standards for use as an rCBF imaging agent.
Main Methods:
- Development of a novel synthesis pathway for [1-11C]butanol.
- Utilization of solid-phase extraction (SPE) for rapid concentration and purification.
- Sterilization and quality control testing to meet United States Pharmacopeia (USP) <823> standards.
Main Results:
- Successful synthesis of [1-11C]butanol with high radiochemical purity.
- High chemical purity and radiochemical yields achieved through the developed method.
- The final product was sterile, pyrogen-free, and compliant with USP <823> requirements.
Conclusions:
- A facile and efficient synthesis method for [1-11C]butanol has been established.
- The developed method provides a reliable way to produce a high-quality rCBF imaging agent.
- This advancement facilitates the use of [1-11C]butanol in clinical PET imaging for neurological assessments.
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