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Catalog No.
RNA polymerase I Inhibitior
Grouped product items
SizePriceStock Qty
10mM (in 1mL DMSO)
In stock
In stock
In stock
In stock

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BMH-21 is a planar heterocyclic small molecule DNA intercalator with inhibition of Pol I activity at IC50 = 0.06 µM. [1]
DNA interaction is a well-recognized property for several classes of cancer drugs, which interact with the duplex DNA with three typical binding modalities, namely DNA intercalation, groove binding and covalent interactions. [1]
BMH-21 intercalated into dsDNA and had binding preference towards GC-rich DNA sequences. BMH-21 had wide cytotoxic activities against human cancer cell lines, and acted in p53-independent manner, widely considered as a mediator of many cytotoxic agents. BMH-21 played as a novel agent that inhibited transcription of RNA polymerase I (Pol I) by binding to ribosomal (r) DNA that caused Pol I blockade and degradation of the large catalytic subunit of Pol I, RPA194. BMH-21 led to the dissolution of the nucleolar structure. [1] BMH-21 clearly induced p53 expression in the epithelial compartment of human prostate tissues indicating tissue permeability. [2]
[1]. Colis L, Peltonen K, Sirajuddin P et al. DNA intercalator BMH-21 inhibits RNA polymerase I independent of DNA damage response. Oncotarget. 2014 Jun 30;5(12):4361-9.
[2]. Peltonen K, Colis L, Liu H et al. Identification of novel p53 pathway activating small-molecule compounds reveals unexpected similarities with known therapeutic agents. PLoS One. 2010 Sep 27;5(9):e12996.

Chemical Properties

Physical AppearanceA solid
StorageStore at -20°C
Cas No.896705-16-1
Solubilityinsoluble in EtOH; insoluble in H2O; ≥7.4 mg/mL in DMSO
Chemical NameN-(2-(dimethylamino)ethyl)-12-oxo-12H-benzo[g]pyrido[2,1-b]quinazoline-4-carboxamide
SDFDownload SDF
Canonical SMILESO=C1C2=C(C=C(C=CC=C3)C3=C2)N=C4C(C(NCCN(C)C)=O)=CC=CN41
Shipping ConditionEvaluation sample solution: ship with blue ice. All other available sizes: ship with RT, or blue ice upon request.
General tipsFor obtaining a higher solubility, please warm the tube at 37°C and shake it in the ultrasonic bath for a while. Stock solution can be stored below -20°C for several months.

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