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Cat. No. M2314
TW-37 Structure
Size Price Availability Quantity
10mg USD 165 In stock
50mg USD 555 In stock
100mg USD 680 In stock
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Quality Control
  • Current batch:
  • Purity >99%
  • COA
  • MSDS
Biological Activity

TW-37 is a Bcl-2 protein family inhibitor with a Ki of 0.29 μM. TW-37 binds to the BH3 binding groove in Bcl-2 protein competing with BH3 peptides derived from Bid, Bim, and Bad proteins. TW-37 binds to Bcl-2 with a Ki value of 290 nM and also to Bcl-xL and Mcl-1 with high affinities. TW-37 potently inhibits cell growth in PC-3 prostate cancer cells with an IC50 value of 200 nM and effectively induces apoptosis in a dose-dependent manner. TW-37 has an IC50 of 1.1 μM for primary human endothelial cells and averaged 0.3 μM for head and neck cancer cells (OSCC3, UM-SCC-1, and UMSCC-74A).

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Chemical Information
Molecular Weight 573.7
Formula C33H35NO6S
CAS Number 877877-35-5
Purity >99%
Solubility DMSO 80 mg/mL
Storage at -20°C
Related Bcl-2 Products

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Obatoclax is an antagonist of Bcl-2 family members containing four Bcl-2 homology domains, including Bcl-2, Bcl-W, Bcl-XL, and Mcl-1 (KD = ~500 nM).


HA14-1 is a Bcl-2 inhibitor that is widely used for studies of apoptosis with IC50 of ~9 μM.


Sabutoclax(BI-97C1) is a pan-Bcl-2 inhibitor, including Bcl-xL, Bcl-2, Mcl-1 and Bfl-1 with IC50 of 0.31 μM, 0.32 μM, 0.20 μM and 0.62 μM, respectively.


BM-1074 is a potent and efficacious Bcl-2/Bcl-xL inhibitor with Ki of <1 nM, inactive to Mcl-1.

Abmole Inhibitor Catalog 2017

Keywords: TW-37 supplier, Bcl-2, inhibitors

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