O-(2-tosyloxyethyl)-N-trityl-L-Tyrosine tert-butyl ester
Product No.:TET-95
CAS No.:478037-15-9

Product Name: O-(2-tosyloxyethyl)-N-trityl-L-Tyrosine tert-butyl ester
Synonyms: L-Tyrosine,O-[2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]-N-(triphenylmethyl)-,1,1-dimethylethyl ester,(2S)-O-(2’-tosyloxyethyl)-N-trityl-tyrosine-tert-butyl ester
CAS No.: 478037-15-9
Molecular Formula: C41H43NO6S
Molecular Weight: 677.85
Application: Precursor for O-(2-[18F]Fluoroethyl)-L-tyrosine([18F]FET)
Presentation: Packaged in amber vials or amber screw-cap vials with teflon-coated stoppers under argon atmosphere
Parameter Method Specification
Sterility USP Sterile
Bacterial endotoxins LAL <2.0 I.U./ml
Appearance Organoleptic White solid
Melting point range Capillary 56-59 ℃
Purity HPLC ≥97%
Identity 1H-NMR Conforms

Storage and Stability

  • Store the product at -20 ℃, protected from light.
  • Short-term storage at higher temperatures does not affect product quality.


  • Complete documentation - Certificates of Analysis including testing reports of 1H-NMR and HPLC spectra for each shipment
  • Customized dispensing available


  • 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.

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