Small molecules & peptides

FET hydrochloride

Reference standard for [¹⁸F]FET (O-(2-[¹⁸F]fluoroethyl)-L-tyrosine) hydrochloride

L-Tyrosine, O-(2-fluoroethyl)-, hydrochloride; (2S)-O-(2'-fluoroethyl)-tyrosine, hydrochloride; FET · HCl

L-Tyrosine, O-(2-fluoroethyl)- hydrochloride salt


Research Chemical


Molar mass 263.69

CAS RN [854750-33-7] (free base)

Purity ≥ 95 %

  • Colorless or nearly colorless solid
  • soluble in DMSO


CoA: appearance, ¹H and ¹⁹F NMR spectra (identity), HPLC (purity)


Hamacher K. et al. Efficient routine Production of the ¹⁸F-labelled amino acid O-(2-[¹⁸F]fluoroethyl)-L-tyrosine. Appl. Radiat. Isotop.2002, 57, 853–856.

Hamacher K. et al. Convenient synthesis of n.c.a. O-(2-[¹⁸F]fluoroethyl)-L-tyrosine. J. Labelled Compd. Radiopharm.2001, 44, 855.

Wester H.-J. et al. Synthesis and radiopharmacology of O-(2-[¹⁸F]fluoroethyl)-L-tyrosine for tumor imaging. J. Nucl. Med.1999, 40, 205–212.

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