OSMI-3 

OSMI-3 (Compound 2b) is a potent, long-lasting, and cell-permeable O-linked N-acetylglucosamine transferase (OGT) inhibitor. Cells contain a large nuclear pool of partially spliced OGT transcript, and OSMI-3 increases detained intron splicing in cells^[1].

O-linked N-acetylglucosamine transferase (OGT)^[1]

OSMI-3 (Compound 2b; 20-50 μM; 4-24 hours; HCT116 cells) treatment significantly reduces O-GlcNAc levels, and has more sustained cellular effects than OSMI-2^[1].
A decrease in HCF-1 cleavage products and the appearance of uncleaved HCF-1 in cells treated with OSMI-3 (Compound 2b) is observed. Because OGT knockdown is known to decrease cell proliferation, the effects of OSMI-3 on cell growth in culture over 96h is also monitored. Although there is no evidence of apoptosis, the reduced growth of cells over time is observed, consistent with the knockdown results^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

669.77

C₃₂H₃₅N₃O₉S₂

2260791-13-5

O=S(N[C@H](C1=CC=CC=C1OCCCC(OCC)=O)C(N(CC(OCC)=O)CC2=CC=CS2)=O)(C3=CC4=C(NC(C=C4)=O)C=C3)=O

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Martin SES, et al. Structure-Based Evolution of Low Nanomolar O-GlcNAc Transferase Inhibitors. J Am Chem Soc. 2018 Oct 24;140(42):13542-13545.  [Content Brief]