Small molecules & peptides

SGMIB Standard

Reference standard for [¹³¹I]SGMIB ()N-succinimidyl 4-guanidinomethyl-3-[¹³¹I]iodobenzoate)

Guanidine TFA salt, [[4-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]-2-iodophenyl]methyl]-; 4-Guanidinomethyl-3-iodo-benzoic acid 2,5-dioxo-pyrrolidin-1-yl ester TFA salt; Benzoic acid, 4-[[(aminoiminomethyl)amino]methyl]-3-iodo-, 2,5-dioxo-1-pyrrolidinyl ester TFA salt; SGMIB Standard

N-Succinimidyl 4-Guanidinomethyl-3-iodobenzoate TFA salt


Research Chemical


Molar mass 416.17 (free base)

CAS RN [344791-53-3] (free base)

Purity ≥ 80 %

  • Colorless to off-white solid


CoA: appearance, ¹H NMR spectrum, HPLC


Vaidyanathan G. et al. A Polar Substituent-Containing Acylation Agent for the Radioiodination of Internalizing Monoclonal Antibodies: N-Succinimidyl 4-Guanidinomethyl-3-[¹³¹I]iodobenzoate ([¹³¹I]SGMIB). Bioconjugate Chem. 2001, 12, 428–438.

Vaidyanathan G. et al. Synthesis of N-succinimidyl 4-guanidinomethyl-3-[*I]iodobenzoate: a radio-iodination agent for labeling internalizing proteins and peptides. Nature Protocols 2007, 2, 282–286.

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Product No.: 7014Filling amount: 10 mg
Product No.: 7014

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