CAS No. 66108-95-0

Batch: Purity:99.81
Iohexol Chemical Structure
Chemical Structure
Check the Iohexol product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 5-[acetyl(2,3-dihydroxypropyl)amino]-1-N,3-N-bis(2,3-dihydroxypropyl)-2,4,6-triiodobenzene-1,3-dicarboxamide
CAS Number 66108-95-0
Molecular Formula

C19H26I3N3O9

Molecular Weight (MW) 821.14
SMILES CC(=O)N(CC(O)CO)C1=C(I)C(=C(I)C(=C1I)C(=O)NCC(O)CO)C(=O)NCC(O)CO
InChIKey NTHXOOBQLCIOLC-UHFFFAOYSA-N

Ordering Information

Biological Activity

Iohexol is a non-ionic, low-osmolality iodinated radiographic contrast agent that functions as an exogenous marker for evaluating renal clearance. It undergoes renal excretion primarily via glomerular filtration, with negligible tubular reabsorption or secretion. Due to its predictable clearance kinetics and metabolic stability, iohexol enables accurate determination of glomerular filtration rate (GFR) to evaluate functional renal capacity. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 100 mg/mL (121.78 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 100 mg/mL
Ethanol 100 mg/mL
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).
Note: Technical data last updated: Sep 1, 2026.