SML1756 Sigma-Aldrich


≥98% (HPLC)

Synonym: 6-(3-Hydroxypropyl)-2-(1,3,6-trimethyl-2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)-1H-benzo[de]isoquinoline-1,3(2H)-dione

  • Empirical Formula (Hill Notation) C25H23N3O4

  • Molecular Weight 429.47



Related Categories B, Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Cell Biology, Cell Signaling and Neuroscience,
Quality Level   100
assay   ≥98% (HPLC)
form   powder
color   white to beige
solubility   DMSO: 20 mg/mL, clear
storage temp.   2-8°C



5, 25 mg in glass bottle

Biochem/physiol Actions

BAY-299 is a potent and selective inhibitor of BRD1 and the second bromodomain of TAF1 (Transcription initiation factor TFIID subunits 1). BAY-299 is selective over other bromodomains including the other members of the BRPF family, and BRD9, ATAD2 and BRD4. BAY-364 is structurally similar to BAY-299 and serves as inactive control. For full characterization details, please visit the BAY-299 probe summary on the Structural Genomics Consortium (SGC) website.

BAY-364 (BAY-299N) is the negative control for the active, structurally similar probe, BAY-299. BAY-364 is available from Sigma. To learn more about and purchase BAY-364, click here.

To learn about other SGC chemical probes for epigenetic targets, visit

Features and Benefits

BAY-299 is an epigenetic chemical probe available through a partnership with the Structural Genomics Consortium (SGC). To learn more and view other SGC epigenetic probes, visit

This compound is a featured product for Gene Regulation research. Click here to discover more featured Gene Regulation products. Learn more about bioactive small molecules for other areas of research at

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


Discover Bioactive Small Molecules for Gene Regulation

The loss of regulation of gene expression is a key component to many human disease states, including neurodegenerative disorders, autoimmune conditions and, most prominently, cancers. Regulation of g...
Keywords: Acetylations, Epigenetics, Gene expression, Genomics, Methylations, PAGE, Post translational modifications, Transcription

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