CAS No. 1698055-85-4

Batch: Purity:99.38
ARS-1620 Chemical Structure
Chemical Structure
Check the ARS-1620 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 1-[4-[6-chloro-8-fluoro-7-(2-fluoro-6-hydroxyphenyl)quinazolin-4-yl]piperazin-1-yl]prop-2-en-1-one
CAS Number 1698055-85-4
Molecular Formula

C21H17ClF2N4O2

Molecular Weight (MW) 430.84
SMILES C=CC(=O)N1CCN(CC1)C2=NC=NC3=C(C(=C(C=C32)Cl)C4=C(C=CC=C4F)O)F
InChIKey ZRPZPNYZFSJUPA-UHFFFAOYSA-N

Ordering Information

Biological Activity

ARS-1620 is a potent, orally bioavailable covalent inhibitor of mutant KRAS G12C. By selectively binding to the GDP-bound conformation of KRAS G12C, it disrupts RAS-dependent intracellular signaling pathways. This targeted engagement suppresses downstream MAPK/ERK signaling, inhibiting cancer cell proliferation and inducing robust tumor regression in mutant KRAS G12C preclinical cancer models. [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 86 mg/mL (199.61 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 86 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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Note: Technical data last updated: Sep 1, 2026.