CAS No. 896705-16-1

Batch: Purity:99.22
BMH-21 Chemical Structure
Chemical Structure
Check the BMH-21 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name N-[2-(dimethylamino)ethyl]-12-oxo-12H-benzo[g]pyrido[2,1-b]quinazoline-4-carboxamide
CAS Number 896705-16-1
Molecular Formula

C21H20N4O2

Molecular Weight (MW) 360.41
SMILES CN(C)CCNC(=O)C1=CC=CN2C1=NC3=CC4=CC=CC=C4C=C3C2=O
InChIKey BXYDVWIAGDJBEC-UHFFFAOYSA-N

Ordering Information

Biological Activity

BMH-21 is a small-molecule DNA intercalator that binds ribosomal DNA and inhibits RNA polymerase I (Pol I) transcription. By intercalating into GC-rich genomic regions, BMH-21 disrupts the Pol I transcription machinery and induces proteasomal degradation of RPA194, the catalytic subunit of Pol I. This selective inhibition suppresses ribosome biogenesis, triggers nucleolar stress, and promotes p53-independent apoptosis in cancer cells.

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 2 mg/mL (5.54 mM) ; Warmed with 60°C water bath ; Ultrasonicated
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)
Ethanol 2 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.