Alsterpaullone

SKU:BHB11900216
Suppliers
StressMarq Biosciences Inc.
StressMarq Biosciences Inc.
Details Products
Overview
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Alsterpaullone is a research-grade small-molecule inhibitor of CDK, GSK supporting Cell Signaling and Cancer research. Supplied as a yellow to brown powder with 98% purity (CAS 237430-03-4, MW 293.3) soluble in DMSO; store at -20°C. For research use only.
Cas No. 237430-03-4
Molecular Formula C16H11N3O3
Purity ≥98% (HPLC)
Application Notes CDK, GSK Inhibitor
Options selector
Catalog no. Size
SIH-431-1MG 1 mg
SIH-431-5MG 5 mg
Available Options

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

  • Options: Size (2) — 1 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-431
Activity
  • Inhibitor
Alternative Names 9-Nitro-7,12-dihydroindolo-[3,2-d][1]benzazepin-6(5)-one
Cas No. 237430-03-4
Form Yellow to brown powder
Molecular Weight 293.3
Product Type
  • Biochemicals
  • Small Molecules
Purity ≥98% (HPLC)
Shipping Shipped Ambient
SMILES C1C2=C(C3=CC=CC=C3NC1=O)NC4=C2C=C(C=C4)[N+](=O)[O-]
Solubility Soluble in DMSO; insoluble in water or 100% ethanol
Source Synthetic
Storage -20ºC

Alsterpaullone is a potent inhibitor of CDK1/cyclin B. It is also a potent and selective inhibitor of GSK-3β and CDK5/p25. Alsterpaullone induces apoptosis by activating caspase-8 and caspase-9, followed by disruption of the mitochondrial potential. It is cell-permeable.

Classification: Skin irritation (Category 2), H315

Eye irritation (Category 2A), H319

Specific target organ toxicity - single exposure (Category 3), Respiratory system, H335

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.

Hazard statements:

  • H315 Causes skin irritation.
  • H319 Causes serious eye irritation.
  • H335 May cause respiratory irritation.

Precautionary statements:

  • P261 Avoid breathing dust/ fume/ gas/ mist/ vapours/ spray.
  • P264 Wash skin thoroughly after handling.
  • P271 Use only outdoors or in a well - ventilated area.
  • P280 Wear protective gloves/ eye protection/ face protection.
  • P302 + P352 IF ON SKIN: Wash with plenty of soap and water.
  • P304 + P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
  • P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P312 Call a POISON CENTER or doctor/ physician if you feel unwell.
  • P321 Specific treatment (see supplemental first aid instructions on this label).
  • P332 + P313 If skin irritation occurs: Get medical advice/ attention.
  • P337 + P313 If eye irritation persists: Get medical advice/ attention.
  • P362 Take off contaminated clothing and wash before reuse.
  • P403 + P233 Store in a well - ventilated place. Keep container tightly closed.
  • P405 Store locked up.
  • P501 Dispose of contents/ container to an approved waste disposal plant.

Alsterpaullone (StressMarq Biosciences Inc., Victoria BC CANADA, Catalog # SIH-431)

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. Zaharevitz D.W., et al. (1999). Cancer Research. 59(11): 2566–2569.
2. Lahusen T., De Siervi A., Kunick C., & Senderowicz A.M. (2003) Mol. Carcinogenesis. 36(4): 183–194.
3. Schultz C., et al. (1999) J. Med. Chem. 42(15): 2909–2919.

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