CAS No. 1619994-69-2

Batch: Purity:99.92
Bromosporine Chemical Structure
Chemical Structure
Check the Bromosporine product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name ethyl N-[6-[3-(methanesulfonamido)-4-methylphenyl]-3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-8-yl]carbamate
CAS Number 1619994-69-2
Molecular Formula

C17H20N6O4S

Molecular Weight (MW) 404.44
SMILES CCOC(=O)NC1=CC(=NN2C1=NN=C2C)C3=CC(=C(C=C3)C)NS(=O)(=O)C
InChIKey UYBRROMMFMPJAN-UHFFFAOYSA-N

Ordering Information

Biological Activity

Bromosporine is a synthetic, broad-spectrum bromodomain inhibitor targeting bromodomain-containing proteins, including BRD2, BRD4, BRD9, and CECR2. By blocking the interaction between bromodomains and acetylated lysine residues on histones, it disrupts chromatin remodeling and gene transcription. This broad inhibition suppresses downstream oncogenic gene expression and inhibits cell proliferation across diverse experimental 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 42 mg/mL (103.84 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.