Small molecules & peptides


Reference standard for [¹¹C]Etomidate

1H-Imidazole-5-carboxylic acid, 1-(1-phenylethyl)-, ethyl ester, (R)-; Imidazole-5-carboxylic acid, 1-(α-methylbenzyl)-, ethyl ester, (R)-(+)-; (+)-Etomidate; Amidate; D-Etomidate; Hypnomidate; Propiscin; R 16659; Radenarcon

CA index name: 1H-Imidazole-5-carboxylic acid, 1-[(1R)-1-phenylethyl]-, ethyl ester


Research Chemical


Molar mass 244.29

CAS RN [33125-97-2]

Purity ≥ 95 %

  • Colorless solid


CoA: appearance, ¹H NMR spectrum


Bergström M. et al. In Vitro and In Vivo Primate Evaluation of Carbon-11-Etomidate and Carbon-11-Metomidate as Potential Tracers for PET Imaging of the Adrenal Cortex and Its Tumors. J. Nucl. Med. 1998, 39, 982–989.

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