Molecular Weight: 523.43 g/mol

Atamparib (RBN-2397) Chemical Structure
Chemical Structure
Check the Atamparib (RBN-2397) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

How to Prepare Stock Solution?

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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 (191.04 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 13 mg/mL
Water Insoluble
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).

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Pre-aliquoted for Longevity: Solid-state aliquots offer significantly longer shelf life compared to stock solutions, ensuring maximum stability for every use.

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Chemical Information

IUPAC Name 4-[[(2S)-1-[3-oxo-3-[4-[5-(trifluoromethyl)pyrimidin-2-yl]piperazin-1-yl]propoxy]propan-2-yl]amino]-5-(trifluoromethyl)-1H-pyridazin-6-one
CAS Number 2381037-82-5
Molecular Formula

C20H23F6N7O3
Molecular Weight (MW) 523.43
SMILES CC(COCCC(=O)N1CCN(CC1)C2=NC=C(C=N2)C(F)(F)F)NC3=C(C(=O)NN=C3)C(F)(F)F
InChIKey UQZCQKXJAXKZQH-LBPRGKRZSA-N

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Note: Technical data last updated: Sep 1, 2026.