Cucurbit[8]uril

Basic Information

Product NameCucurbit[8]uril

CAS Registry Number259886-51-6

FormulaC₄₈H₄₈N₃₂O₁₆·10H₂O

Molecular Weight1508 g/mol

Purity≥98%

StorageSealed, light-proof, store at room temperature in dry conditions

Specifications & Pricing

Specifications	Price	Stock Status
500mg	$280	In Stock
1g	$420	In Stock
5g	$1,400	In Stock
10g	$2,520	In Stock

Product Description

Solubility: Very poor water solubility (10⁻⁴–10⁻⁵ M). Soluble in strong acids (6 M HCl ~10 mg/mL). Chemical properties: Forms complexes with metal ions and host-guest complexes. Appearance: Colorless or white powder, purity ≥95%.

Applications

Ternary ComplexationSupramolecular PolymersPhotochemistry

Add to Inquiry Contact to Buy

Technical notes on CB[8]

CB[8] features a cavity of ≈479 Å³ and a portal of ≈6.9 Å. It is best known for binding two guests simultaneously as a 1:1:1 ternary complex—typically an electron acceptor (methyl viologen) paired with an electron donor (naphthol, aromatic amino acid, or peptide fragment). This reversible crosslink enables self-healing hydrogels, supramolecular polymers, stimuli-responsive materials, and photochemical control. CB[8] has moderate water solubility; warm to dissolve and filter while hot. Since ternary binding involves two sequential equilibria, determine binary and ternary constants separately.

Storage, Solubility, and Handling Guidelines

Store sealed, dry, and protected from light at room temperature. For long-term storage, keep at 2–8 °C under dry conditions.
Cucurbituril powders are slightly hygroscopic. Reseal immediately after use and record the batch number and opening date.
Solubility tips: CB[7] and the modified series dissolve directly in water. For CB[6], first dissolve in formic acid or DMSO, then dilute into the target solvent system.
Filter stock host solutions and use them fresh; for binding experiments, record buffer composition, ionic strength, and pH.
These materials are for research use only and must not be used in humans, food, pharmaceutical manufacturing, or clinical diagnostics.
Batch-specific purity, water content, and spectral data are available upon request prior to ordering.