Small molecules & peptides


Precursor for D,L-[¹¹C]methyl-methionine (Analytical standard for validation of L-[¹¹C]methyl-methionine synthesis)

(R,S)-Homocysteine; (R,S)-2-Amino-4-mercaptobutanoic acid; Butanoic acid, 2-amino-4-mercapto-, (R,S)

CA index name: Butyric acid, 2-amino-4-mercapto-, DL


Research Chemical


Molar mass 135.18

CAS RN [454-29-5]

Purity ≥ 95 %

  • Colorless or nearly colorless solid


CoA: appearance, ¹H NMR spectrum


Schmitz F. et al. Fast Routine Production of L-[¹¹C-Methyl]-methionine with Al₂O₃/KF. Appl. Radiat. Isot. 1995, 46, 893–897.

Comar D. et al. Labelling and Metabolism of Methionine-Methyl-¹¹C. Eur. J. Nucl. Med. 1976, 1, 11–14.

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