KNK 437

SKU:BHB11900377
Suppliers
StressMarq Biosciences Inc.
StressMarq Biosciences Inc.
Details Products
Overview
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KNK 437 (3-(1) is a research-grade small-molecule inhibitor of HSP70 for Cancer and Heat Shock studies. Supplied as a off-white powder with >98% purity (CAS 218924-25-5, MW 245.2) dissolvable in DMSO; store at -20°C. For research use only.
Cas No. 218924-25-5
Molecular Formula C13H11NO4
Purity >98% (HPLC); NMR (Conforms)
Application Notes HSP70 Inhibitor
Options selector
Catalog no. Size
SIH-599-5MG 5 mg
SIH-599-25MG 25 mg
Available Options

Select the variant that best fits your experiment. Availability and lead time may vary by option.

  • Options: Size (2) — 25 mg, 5 mg.
  • Lead time: options listed as “in stock at manufacturer” typically ship in 2-3 business days; other statuses may take longer.
  • Storage: -20ºC
  • Shipping: ships at ambient temperature.
  • Upon receipt: store at the recommended temperature as soon as possible.
  • Sales terms and conditions: Please review prior to ordering.
Field Specification
Mfr No SIH-599
Activity
  • Inhibitor
Alternative Names 3-(1,3-Benzodioxol-5-ylmethylene)-2-oxo-1-pyrrolidinecarboxaldehyde
Cas No. 218924-25-5
Form Off-white powder
Molecular Weight 245.2
Product Type
  • Biochemicals
  • Small Molecules
Purity >98% (HPLC); NMR (Conforms)
Shipping Shipped Ambient
SMILES C1CN(C(=O)C1=CC2=CC3=C(C=C2)OCO3)C=O
Solubility May be dissolved in DMSO (30 mg/ml)
Source Synthetic
Storage -20ºC

KNK 437 is a small-molecule inhibitor of heat shock protein (HSP) expression, including HSP70, HSP40, and HSP105. It blocks the acquisition of thermotolerance and has been investigated in cancer therapy for its ability to sensitize cells to stress. In neuroscience, HSPs play a critical role in protein folding, aggregation prevention, and cellular stress responses. KNK 437 is used to study the role of HSPs in neurodegenerative diseases such as Alzheimer’s and Parkinson’s, where protein misfolding and aggregation are central pathological features.

Classification: Caution: Substance not yet fully tested.

Safety Phrases:

  • S22 - Do not breathe dust
  • S24/25 - Avoid contact with skin and eyes
  • S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection

KNK 437 (StressMarq Biosciences Inc., Victoria BC CANADA, Catalog # SIH-599)

Need this compound in a format that drops straight into your assay? We can tailor formulation, chemistry, and documentation so your results stay consistent across runs and re-orders.

  • Format options: solid or pre-dissolved solution (choose solvent), target concentration, aliquots, light/moisture-protected packaging
  • Chemistry options: free base/acid vs salt forms, hydrate/solvate preference, stereoisomer control (single enantiomer or racemate), close analogs
  • Add-on labels & handles: D/¹³C/¹⁵N isotopes (LC-MS/internal standards), azide/alkyne or other functional handles for conjugation
  • QC & documentation: standard COA or enhanced analytical pack (HPLC/LC-MS/NMR), chiral purity, residual solvents, water content (KF), method-specific specs
  • Scale & continuity: mg to gram scale, bulk pricing, lot reservation, repeat-order continuity

To quote quickly, tell us: compound name + CAS/structure (SMILES or mol file), intended assay context, solvent preference, salt/stereochemistry requirements, purity/QC level, and the amount (mg–g).

Can’t find the compound you’re looking for?
Send the CAS or structure and your specs. We can help source it, suggest close equivalents, or discuss custom synthesis with the right QC documentation (RUO).

1. Yokota S., Kitahara M., and Nagata K. (2000) Cancer Res. 60 (11): 2942-2948. 2. Yang S., et al. (2020) Oncogene. 39: 249-261.

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