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Patent Searching and Data


Title:
SIMPLE ASTATINE CONCENTRATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/225147
Kind Code:
A1
Abstract:
For the purpose of producing astatine-211 free from chloride ions with high yield, an astatine-211 production method is provided, the method being characterized by comprising: (1) a step for irradiating bismuth with an α ray to produce astatine-211; (2) a step for heating the astatine-211 produced in step (1) to vaporize the astatine-211; (3) a step for cooling the astatine-211 vaporized in step (2) and collecting the astatine-211 with a volatile and polar solvent to produce an astatine-211 solution; (4) a step for adding a weak acid salt to the astatine-211 solution produced in step (3) to produce an astatine-211 solution containing the weak acid salt; and (5) a step for removing the solvent from the astatine-211 solution containing the weak acid salt which is produced in step (4).

Inventors:
TANAKA HIROSHI (JP)
TAKAHASHI KAZUHIRO (JP)
SUZUKI MIHO (JP)
Application Number:
PCT/JP2021/017415
Publication Date:
November 11, 2021
Filing Date:
May 06, 2021
Export Citation:
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Assignee:
TOKYO INST TECH (JP)
UNIV FUKUSHIMA MEDICAL (JP)
International Classes:
C01B7/00; A61K47/54; A61K51/04; A61P35/00; C07B59/00; C07D319/04
Domestic Patent References:
WO2019112034A12019-06-13
Foreign References:
JP2018534345A2018-11-22
JP2018536031A2018-12-06
Attorney, Agent or Firm:
NOMURA, Kenichi et al. (JP)
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