Small molecules & peptides

DTPA-TOC trifluoroacetate

Precursor for radiolabelled DTPA-TOC

1,2-Dithia-5,8,11,14,17-pentaazacycloeicosane, cyclic peptide deriv.; CA index name: L-Cysteinamide, N-[2-[[2-[bis(carboxymethyl)amino]ethyl](carboxymethyl)amino]ethyl]-N-(carboxymethyl)glycyl-D-phenylalanyl-L-cysteinyl-L-tyrosyl-D-tryptophyl-L-lysyl-L-threonyl-N-[(1R,2R)-2-hydroxy-1-(hydroxymethyl)propyl]-, cyclic (3→8)-disulfide

Sequence: DTPA-D-Phe-Cys-Tyr-D-Trp-Lys-Thr-Cys-Thr(ol), cyclic disulfide


Research Chemical


Molar mass 1410.57

CAS RN [147790-81-6] (net peptide)

Purity ≥ 95 %

  • Colorless to off-white freeze-dried solid
  • soluble in water, dimethyl sulfoxide


CoA: appearance, MS (identity), HPLC (purity)


De Jong M. et al. Pre-clinical comparison of [DTPA0] octreotide, [DTPA0,Tyr3] octreotide and [DOTA0,Tyr3] octreotide as carriers for somatostatin receptor-targeted scintigraphy and radionuclide therapy. Int. J. Cancer 1998, 75, 406–411.

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