Small molecules & peptides


Precursor for L-[¹¹C]Methyl-methionine

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

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


Research Chemical


Molar mass 135.18

CAS RN [6027-13-0]

Purity ≥ 95 %

  • Colorless or nearly colorless solid
  • soluble in water, insoluble in organic solvents


CoA: appearance, ¹H NMR spectrum (identity), HPLC (purity), ≤ 3 % homocystin (impurity)


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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