CAS No. 909910-43-6

Batch: Purity:97
A-83-01 Chemical Structure
Chemical Structure
Check the A-83-01 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 3-(6-methyl-2-pyridinyl)-N-phenyl-4-quinolin-4-ylpyrazole-1-carbothioamide
CAS Number 909910-43-6
Molecular Formula

C25H19N5S

Molecular Weight (MW) 421.52
SMILES CC1=NC(=CC=C1)C2=NN(C=C2C3=CC=NC4=CC=CC=C34)C(=S)NC5=CC=CC=C5
InChIKey HIJMSZGHKQPPJS-UHFFFAOYSA-N

Ordering Information

Biological Activity

A-83-01 is a potent inhibitor of TGF-β type I receptors, targeting ALK5, ALK4, and ALK7. By blocking kinase activity, it suppresses TGF-β-induced Smad phosphorylation and prevents epithelial-to-mesenchymal transition (EMT) without affecting p38 MAPK or ERK pathways, thereby modulating cell differentiation and migration. [1]

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 21 mg/mL (49.81 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water Insoluble
Ethanol 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.