Automated synthesis of hypoxia imaging agent [18F]FMISO based upon a modified Explora FDG4 module

Mingwei Wang; Yingjian Zhang; Yongping Zhang; Huiyu Yuan

doi:10.1007/s10967-008-7395-8

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 280: Issue 1

Automated synthesis of hypoxia imaging agent [¹⁸F]FMISO based upon a modified Explora FDG₄ module

Authors:

Mingwei Wang

Mingwei Wang

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Yingjian Zhang

Yingjian Zhang

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Yongping Zhang

Yongping Zhang

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Huiyu Yuan

Huiyu Yuan

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Pages:: 149–155

Online Publication Date:: 18 Mar 2009

Publication Date:: 01 Apr 2009

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-008-7395-8

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Abstract

A new automated synthesis procedure of 1-H-1-(3-[¹⁸F]fluoro-2-hydroxypropyl)-2-nitroimidazole ([¹⁸F]FMISO), a specific hypoxia imaging agent with great significances for the noninvasive, dynamic hypoxia evaluation of cancer, was developed by modifying Explora FDG₄ module, a commercial [¹⁸F]FDG production system, in this study. Its radiochemical synthesis was carried out via two sequent reaction steps, i.e. the nucleophilic displacement of labeling precursor 1-(2′-nitro-1′-imidazolyl)-2-O-tetrahydropyranyl-3-O-tosyl-propanediol (NITTP) with activated ¹⁸F- ion at 100 °C for 8 minutes, and the following hydrolysis with 1M HCl at 100 °C for 5 minutes and neutralization with 1M NaOH. Two-pot reaction with two independent separations was adopted to assure the good separation of final product via solid phase extraction (SPE) based upon combined Sep-pak cartridges instead of high performance liquid chromatography (HPLC). This fast, reliable preparation route of ¹⁸F-FMISO could complete within 50 minutes with about 55% of high radiochemical yield (with decay correction) and more than 98% of good radiochemical purity. The modified module could perform multiple runs of production of [¹⁸F]FMISO.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)