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Heat Shock Protein Inhibitor II

CAS No.
1859-42-3
Chemical Name:
Heat Shock Protein Inhibitor II
Synonyms
3-benzo[1,3]dioxol-5-ylmethylene-pyrrolidin-2-one;2-Pyrrolidinone, 3-(1,3-benzodioxol-5-ylmethylene)-;3-(Benzo[d][1,3]dioxol-5-ylmethylene)pyrrolidin-2-one
CBNumber:
CB53136752
Molecular Formula:
C12H11NO3
Molecular Weight:
217.22
MDL Number:
MFCD19104819
MOL File:
1859-42-3.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-04-24 14:58:42

Heat Shock Protein Inhibitor II Properties

Melting point 249-250 °C
Boiling point 466.9±45.0 °C(Predicted)
Density 1.355±0.06 g/cm3(Predicted)
storage temp. Store at -20°C
solubility DMF: 10 mg/ml; DMSO: 10 mg/ml; DMSO:PBS (pH 7.2)(1:5): 0.1 mg/ml
form A crystalline solid
pka 14.65±0.20(Predicted)

Heat Shock Protein Inhibitor II price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Cayman Chemical 22358 Heat Shock Protein Inhibitor II ≥98% 1859-42-3 5mg $103 2026-04-30 Buy
Cayman Chemical 22358 Heat Shock Protein Inhibitor II ≥98% 1859-42-3 10mg $183 2026-04-30 Buy
Cayman Chemical 22358 Heat Shock Protein Inhibitor II ≥98% 1859-42-3 25mg $402 2026-04-30 Buy
ChemScene CS-0063682 KNK423 1859-42-3 5mg $200 2026-06-04 Buy
ChemScene CS-0063682 KNK423 1859-42-3 10mg $320 2026-06-04 Buy
Product number Packaging Price Buy
22358 5mg $103 Buy
22358 10mg $183 Buy
22358 25mg $402 Buy
CS-0063682 5mg $200 Buy
CS-0063682 10mg $320 Buy

Heat Shock Protein Inhibitor II Chemical Properties, Uses, Production

Description

Heat shock protein (Hsp) inhibitor II is the active form of Hsp inhibitor I and a benzylidene lactam compound that prevents the synthesis of inducible Hsps, such as Hsp105, Hsp72, and Hsp40. Hsp inhibitor II decreases Hsp72 synthesis in vivo and reduces thermotolerance of tumors in SCC VII tumor-containing mice. At 100 μM, it inhibits the development of thermotolerance in COLO 320 DM cells. Inhibition of Hsp70 with Hsp inhibitor II in combination with amphotericin B (AmB; ) increases susceptibility of AmB-susceptible (MICs = 0.058 versus 0.27 μg/ml for combined and AmB alone, respectively) and AmB-resistant (MICs = 21.33 versus >32 μg/ml for combined and AmB alone, respectively) strains of A. fumigatus.

Uses

KNK423 is a specific heat shock protein (HSP) synthesis inhibitor. KNK423 improves the efficiency of Amphotericin B in inhibiting resistant Aspergillus terreus by blocking HSP70. KNK423 can be used in cancer and bacterial infection research[1][2].

References

[1] Koishi M, et al. The effects of KNK437, a novel inhibitor of heat shock protein synthesis, on the acquisition of thermotolerance in a murine transplantable tumor in vivo. Clin Cancer Res. 2001 Jan;7(1):215-9. PMID:11205912
[2] Blatzer M, et al. Blocking Hsp70 enhances the efficiency of amphotericin B treatment against resistant Aspergillus terreus strains. Antimicrob Agents Chemother. 2015 Jul;59(7):3778-88. DOI:10.1128/AAC.05164-14

Heat Shock Protein Inhibitor II Preparation Products And Raw materials

Raw materials

Preparation Products

Heat Shock Protein Inhibitor II Suppliers

Global Suppliers ( 20)
Supplier Tel Email Country ProdList Advantage
BOC Sciences 1-631-485-4226; 16314854226 info@bocsci.com United States 9920 65
Shanghai EFE Biological Technology Co., Ltd. 021-65675885 18964387627 info@efebio.com China 9799 58
Shanghai YuanYe Biotechnology Co., Ltd. 15026964105 2881489226@qq.com China 89667 60
Tianjin Kailiqi Biotechnology Co., Ltd. 15076683720 klq@cw-bio.com China 9778 55
Shanghai Hongye Biotechnology Co. Ltd 400-9205774 400-920-5774 sales@glpbio.cn China 6705 58
career henan chemical co +86-0371-86658258 factory@coreychem.com China 29780 58
Zhejiang Huida Biotech Co., LTD 0571-89903022 18679456698 zilong@hizyme.com China 8001 58
Nanjing Shizhou Biology Technology Co.,Ltd 025-85560043 13675144456 sean.lv@synzest.com China 11432 58
Jinan Jiuli Biotechnology Co. , Ltd. 15865264761 486064515@qq.com China 5000 58
Beijing Jin Ming Biotechnology Co., Ltd. 010-60605840 psaitong@jm-bio.com China 27626 58

View Latest Price from Heat Shock Protein Inhibitor II manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Heat Shock Protein Inhibitor II pictures 2019-12-26 Heat Shock Protein Inhibitor II
1859-42-3
$1.00 1g 99% 200kg Career Henan Chemical Co
3-benzo[1,3]dioxol-5-ylmethylene-pyrrolidin-2-one 3-(Benzo[d][1,3]dioxol-5-ylmethylene)pyrrolidin-2-one 2-Pyrrolidinone, 3-(1,3-benzodioxol-5-ylmethylene)- 1859-42-3