Small molecules & peptides


Reference standard for [¹²³I]IUdR and [¹²⁵I]IUdR (5-[¹²³I]iodo-2'-deoxyuridine, 5-[¹²⁵I]iodo-2'-deoxyuridine)

1-(2-Deoxy-β-D-ribofuranosyl)-5-iodouracil; 2'-Deoxy-5-iodouridine; 5-Iodo-2'-deoxyuridine; 5-Iodo-2'-desoxyuridine; (+)-5-Iodo-2'-deoxyuridine; 5-Iododeoxyuridine; 5-Iodouracil deoxyriboside; 5IUDR; 1-(4-Hydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-5-iodo-1H-pyrimidine-2,4-dione; Idoxuridine; IDU; Dendrid; Emanil

CA index name: Uridine, 2'-deoxy-5-iodo-


Research Chemical


Molar mass 354.1

CAS RN [54-42-2]

Purity ≥ 95 %

  • Colorless solid


CoA: appearance, ¹H NMR spectrum


Kassis A. I. 5-([¹²³I]/[¹²⁵I])Iodo-2'-deoxyuridine for cancer diagnosis and therapy. J. Nucl. Med, Allied Sci. 1990, 34, 299–303.

Harrison et al. Bladder cancer-[¹²³I]IUdR imaging in preparation for [¹²⁵I]IUdR therapy. J. Nucl. Med. 1994, 35, 144P.

Koziorowski J. et al. Simple preparation of ⁷⁶Br-, ¹²³I-, and ²¹¹At-labeled 5-halo-2'-deoxyuridine. J. Radioanal. Nucl. Chem. 1997, 219, 127–128.

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