Small molecules & peptides


Reference standard for [¹¹C]Ro15-4513

8-Azido-5,6-dihydro-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylic acid ethyl ester; Ro 15-4513

CA index name: 4H-Imidazo[1,5-a][1,4]benzodiazepine-3-carboxylic acid, 8-azido-5,6-dihydro-6-oxo-, ethyl ester


Research Chemical


Molar mass 326.31

CAS RN [91917-65-6]

Purity ≥ 95 %

  • Off-white solid


CoA: appearance, ¹H NMR spectrum

Product sheets (PDF)


Halldin C. et al. [¹¹C]Ro 15–4513, a ligand for visualization of benzodiazepine receptor binding. Preparation, autoradiography and positron emission tomography. Psychopharmacology 1992, 108, 16–22.

Suhara T. et al. Visualization of α5 subunit of GABAA/benzodiazepine receptor by [¹¹C]Ro15–4513 using positron emission tomography. Synapse 2003, 47, 200–208.

Suzuki K. et al. Automated synthesis of the ultra high specific activity of [¹¹C]Ro15–4513 and its application in an extremely low concentration region to an ARG study. Nucl. Med. Biol. 2003, 30, 335–343.

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