An HDAC inhibitor and DNA alkylating agent
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EDO-S101

Item No. 23328

Technical Information
Formal Name
5-[bis(2-chloroethyl)amino]-N-hydroxy-1-methyl-1H-benzimidazole-2-heptanamide
CAS Number
1236199-60-2
Synonyms
  • Tinostamustine
Molecular Formula
C19H28Cl2N4O2
Formula Weight
Purity
≥98%
A crystalline solid
DMF: 1 mg/mlDMSO: 5 mg/mlDMSO:PBS (pH 7.2)(1:9): 0.1 mg/ml
λmax
231, 324 nm
SMILES
CN1C2=CC=C(N(CCCl)CCCl)C=C2N=C1CCCCCCC(NO)=O
InChi Code
InChI=1S/C19H28Cl2N4O2/c1-24-17-9-8-15(25(12-10-20)13-11-21)14-16(17)22-18(24)6-4-2-3-5-7-19(26)23-27/h8-9,14,27H,2-7,10-13H2,1H3,(H,23,26)
InChi Key
GISXTRIGVCKQBX-UHFFFAOYSA-N
Shipping & Storage Information
Storage
-20°C
Shipping
Room temperature in continental US; may vary elsewhere
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    Product Description

    EDO-S101 is a fusion molecule composed of the DNA alkylating agent bendamustine and the histone deacetylase (HDAC) inhibitor SAHA (Item No. 10009929) that inhibits class I and II HDACs (IC50s = 9-107 nM for HDAC1-3, 6, 8, and 10).1 It inhibits HDAC activity in rat peripheral blood mononuclear cells (PBMCs) ex vivo by 90% following a single dose of 10 mg/kg. EDO-S101 also induces formation of DNA crosslinks and double-strand breaks in HL-60 cells. It reduces growth of multiple myeloma (MM) cell lines irrespective of p53 mutational status or established resistance to DNA alkylating agents (IC50s = 1.6-4.8 μM).2 EDO-S101 also induces MM cell death ex vivo in bone marrow samples isolated from patients with early- and late-stage MM. In vivo, EDO-S101 (60 mg/kg per week) reduces tumor growth and prolongs survival in an MM1S end-stage mouse xenograft model. It also prolongs survival in a multidrug resistant Vk12653 mouse transplant model of refractory MM.

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. Mehrling, T., and Chen, Y. The alkylating-HDAC inhibition fusion principle: Taking chemotherapy to the next level with the first in class molecule EDO-S101. Anticancer Agents Med. Chem. 16(1), 20-28 (2016).

    2. López-Iglesias, A.A., Herrero, A.B., Chesi, M., et alPreclinical anti-myeloma activity of EDO-S101, a new bendamustine-derived molecule with added HDACi activity, through potent DNA damage induction and impairment of DNA repair. J. Hematol. Oncol. 10(1), 127 (2017).