Science in China Series B: Chemistry

, Volume 50, Issue 2, pp 276–283 | Cite as

Synthesis of O-(2-[18F]fluoroethyl)-L-tyrosine and its biological evaluation in B16 melanoma-bearing mice as PET tracer for tumor imaging

  • Wang MingWei 
  • Yin DuanZhi 
  • Li ShiQiang 
  • Wang YongXian 
Research Papers


O-(2-[18F]fluoroethyl)-L-tyrosine ([18F]FET), a fluorine-18 labeled analogue of tyrosine, has been synthesized and biologically evaluated in tumor-bearing mice. The whole synthesis procedure is completed within 50 min. The radiochemical yield is about 40% (no decay corrected) and radiochemical purity more than 97% after simplified solid phase extraction. [18F]FET shows rapid, high uptake and long retention in the tumor as well as low uptake in the brain. The ratios of tumor-to-muscle (T/M) and tumor-to-blood (T/B) of [18F]FET are similar to those of [18F]FDG, but the ratios of tumor-to-brain (T/Br) are 2–3 times higher than that of [18F]FDG. Autoradiography of [18F]FET demonstrates a remarkable accumulation in melanoma with high contrast. It appears to be a probable competitive candidate for melanoma imaging with PET.


[18F]FET [18F]FDG PET imaging melanoma autoradiography 


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Copyright information

© Science in China Press 2007

Authors and Affiliations

  • Wang MingWei 
    • 1
  • Yin DuanZhi 
    • 1
  • Li ShiQiang 
    • 1
  • Wang YongXian 
    • 1
  1. 1.Radiopharmaceutical Centre, Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghaiChina

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