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Radiolysis of an aqueous [11C]iomazenil solution
https://repo.qst.go.jp/records/47695
https://repo.qst.go.jp/records/4769550fd5761-1e73-4767-97ca-3f5678c86f13
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-03-27 | |||||
| タイトル | ||||||
| タイトル | Radiolysis of an aqueous [11C]iomazenil solution | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Fukumura, Toshimitsu
× Fukumura, Toshimitsu× Yamaguchi, Masatoshi× Suzuki, Kazutoshi× 福村 利光× 山口 政俊× 鈴木 和年 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Radiolysis of [11C]iomazenil was investigated in an aqueous solution. Preparation of [11C]iomazenil with [11C]CH3I produced a good radiochemical yield, however, its radiochemical purity was always less than 90% without additives. This poor radiochemical purity was attributed to radiolysis of [11C]iomazenil. The degradation of [11C]iomazenil via radiolysis was markedly facilitated in the presence of HCOONa (strong selective hydroxyl radical and hydrogen atom scavenger). On the other hand, the radiolysis was suppressed effectively in the presence of NaNO3 (selective hydrated electron scavenger), suggesting participation of hydrated electrons in the radiolysis of [11C]iomazenil. LC/MS analysis of the degradation product suggested that the major degradation product by radiolysis had a molecular weight of 285 corresponding to the deiodinated compound. The present study showed that a decrease in the radiochemical purity of [11C]iomazenil was attributed to the radiolysis via the deiodination reaction by hydrated electron. |
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| 書誌情報 |
Radiochimica Acta 巻 92, 号 2, p. 119-123, 発行日 2004-03 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0033-8230 | |||||
