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Sulfo-SIAB sodium

  CAS No.: 144650-93-1   Cat No.: BADC-00597 4.5  

Sulfo-SIAB sodium is a water-soluble heterobifunctional linker featuring NHS ester and iodoacetyl groups. Widely used in ADCs, it enables amine-to-thiol crosslinking, forming stable thioether bonds. Its sulfonated structure improves solubility, ideal for aqueous-phase bioconjugation.

Sulfo-SIAB sodium

Structure of 144650-93-1

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ADC Linker
Molecular Formula
C13H10IN2NaO8S
Molecular Weight
504.19
Shipping
Room temperature

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Synonyms
sodium;1-[4-[(2-iodoacetyl)amino]benzoyl]oxy-2,5-dioxopyrrolidine-3-sulfonate; Sulfo-N-succinimidyl (N-Iodoacetyl)aminobenzoate
IUPAC Name
sodium; 1-[4-[(2-iodoacetyl)amino]benzoyl]oxy-2,5-dioxopyrrolidine-3-sulfonate
Canonical SMILES
C1C(C(=O)N(C1=O)OC(=O)C2=CC=C(C=C2)NC(=O)CI)S(=O)(=O)[O-].[Na+]
InChI
InChI=1S/C13H11IN2O8S.Na/c14-6-10(17)15-8-3-1-7(2-4-8)13(20)24-16-11(18)5-9(12(16)19)25(21,22)23;/h1-4,9H,5-6H2,(H,15,17)(H,21,22,23);/q;+1/p-1
InChIKey
HHSGWIABCIVPJT-UHFFFAOYSA-M
Shipping
Room temperature

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

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Historical Records: 4-((S)-2-((S)-2-amino-3-methylbutanamido)-5-ureidopentanamido)benzyl 2-(pyridin-2-yldisulfanyl)ethylcarbamate | Ald-Ph-amido-PEG1-C2-Pfp ester | DNP-PEG4-NHS ester | Fmoc-L-Lys(Pentynoyl-DIM)-OH | 4-pentynoic acid succinimidyl ester | Bis(NHS)PEG9 | Sulfo-SIAB sodium
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