Small molecules & peptides


Complexation agent for [*Cu]-Labelling

H2ATSM; Diacetyl bis(N⁴-methylthiosemicarbazone); 2,3-Butanedione bis(4-methylthiosemicarbazone); ATSM (ligand)

CA index name: Hydrazinecarbothioamide, 2,2'-(1,2-dimethyl-1,2-ethanediylidene)bis[N-methyl-


Research Chemical


Molar mass 260.39

CAS RN [63618-91-7]

Purity ≥ 95 %

  • Colorless to yellowish solid


CoA: appearance, ¹H NMR spectrum


Szajek L.P. et al. Semi-remote production of [⁶⁴Cu]CuCl₂ and preparation of high specific activity [⁶⁴Cu]Cu-ATSM for PET studies. Radiochim. Acta 2005, 93, 239–244.

Fujibayashi Y. et al. Copper-62-ATSM: A new Hypoxia Imaging Agent with high Membrane Permeability and Low Redox Potential J. Nucl. Med. 1997, 38, 1150–1160.

Green M.A. et al. Copper-62-Labeled Pyruvaldehyde Bis(N4-methylthiosemicarbazonato)copper(II): Synthesis and Evaluation as a Positron Emission Tomography Tracer for Cerebral and Myocardial Perfusion J. Nucl. Med. 1990, 31, 1989–1996.

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Product No.: 1455Filling amount: 10 mg
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