IPI-504 (Retaspimycin hydrochloride)Hsp90 inhibitor,novel, potent,selective CAS# 857402-63-2 |
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Quality Control & MSDS
3D structure
Package In Stock
Number of papers citing our products
| Cas No. | 857402-63-2 | SDF | Download SDF |
| PubChem ID | 11685945 | Appearance | Powder |
| Formula | C31H46ClN3O8 | M.Wt | 624.2 |
| Type of Compound | N/A | Storage | Desiccate at -20°C |
| Synonyms | Retaspimycin Hydrochloride; IPI-504; Retaspimycin (Hydrochloride) | ||
| Solubility | DMSO : ≥ 56 mg/mL (89.72 mM) *"≥" means soluble, but saturation unknown. | ||
| Chemical Name | [(4E,6Z,8S,9S,10E,12S,13R,14S,16R)-13,20,22-trihydroxy-8,14-dimethoxy-4,10,12,16-tetramethyl-3-oxo-19-(prop-2-enylamino)-2-azabicyclo[16.3.1]docosa-1(21),4,6,10,18(22),19-hexaen-9-yl] carbamate;hydrochloride | ||
| SMILES | CC1CC(C(C(C=C(C(C(C=CC=C(C(=O)NC2=CC(=C(C(=C2O)C1)NCC=C)O)C)OC)OC(=O)N)C)C)O)OC.Cl | ||
| Standard InChIKey | OIRUWDYJGMHDHJ-AFXVCOSJSA-N | ||
| Standard InChI | InChI=1S/C31H45N3O8.ClH/c1-8-12-33-26-21-13-17(2)14-25(41-7)27(36)19(4)15-20(5)29(42-31(32)39)24(40-6)11-9-10-18(3)30(38)34-22(28(21)37)16-23(26)35;/h8-11,15-17,19,24-25,27,29,33,35-37H,1,12-14H2,2-7H3,(H2,32,39)(H,34,38);1H/b11-9-,18-10+,20-15+;/t17-,19+,24+,25+,27-,29+;/m1./s1 | ||
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months. Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it. |
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| About Packaging | 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial. 2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial. 3. Try to avoid loss or contamination during the experiment. |
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| Shipping Condition | Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request. | ||
| Description | Retaspimycin Hcl(IPI504 Hcl) is a small-molecule inhibitor of heat shock protein 90 (HSP90) with antiproliferative and antineoplastic activities. | |||||
| Targets | HSP90 | |||||
IPI-504 (Retaspimycin hydrochloride) Dilution Calculator
IPI-504 (Retaspimycin hydrochloride) Molarity Calculator
| 1 mg | 5 mg | 10 mg | 20 mg | 25 mg | |
| 1 mM | 1.6021 mL | 8.0103 mL | 16.0205 mL | 32.041 mL | 40.0513 mL |
| 5 mM | 0.3204 mL | 1.6021 mL | 3.2041 mL | 6.4082 mL | 8.0103 mL |
| 10 mM | 0.1602 mL | 0.801 mL | 1.6021 mL | 3.2041 mL | 4.0051 mL |
| 50 mM | 0.032 mL | 0.1602 mL | 0.3204 mL | 0.6408 mL | 0.801 mL |
| 100 mM | 0.016 mL | 0.0801 mL | 0.1602 mL | 0.3204 mL | 0.4005 mL |
| * Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations. | |||||
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Retaspimycin hydrochloride (also known as IPI-504), a hydroquinone hydrochloride salt derivative of 17-AAG, is a novel, potent and selective inhibitor of heat shock protein 90(Hsp90) that binds to the amino-terminal ATP/ADP-binding site of Hsp90. As a highly water-soluble version of 17-AAG, IPI-504 (solubility > 200 mg/mL) does not need prior dissolution in organic solvents and hence can be delivered in high concentrations. Once in the systemic circulation, IPI-504 is deprotonated and converted into the free base IPI-504 which is subsequently oxidized to 17-AAG. IPI-504 potently inhibits proliferation in several tumor cell lines with 50% inhibition concentration IC50 values ranging from 10-40 nmol/L and has been used for the treatment of gastrointestinal stromal tumors, soft-tissue sarcomas and non-small cell lung cancer.
Reference
Britt Erika Hanson and David H Vesole. Retaspimycin hydrochloride (IPI-504): a novel heat shock protein inhibitor as an anticancer agent. Expert Opin. Investi. Drugs (2009) 18(9): 1375-1383
David Siegel, Sundar Jagannath, David H. Vesole, Ivan Borello, Amitabha Mazumder, Constantine Mitsiades, Jill Goddard, Joi Dunbar, Emmanuel Normant, Julian Adams, David Grayzel, Kenneth C. Anderson and Paul Richardson. A phase 1 study of IPI-504 (retaspimycin hydrochloride) in patients with relapsed or relapsed and refractory multiple myeloma. Leukemia & Lymphoma, 2011; 52(12): 2308-2315
Ching Ching Leow, Jon Chesebrough, Karen T. Coffman, Christine A. Fazenbaker, John Gooya, David Weng, Steve Coats, Dowdy Jackson, Bahija Jallal and Yong Chang. Antitumor efficacy of IPI-504, a selective heat shock protein 90 inhibitor against human epidermal growth factor receptor 2-positive human xenograft models as a single agent and in combination with trastuzumab or lapatinib. Mol Cancer Ther 2009; 8: 2131-2141
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Multicenter phase II trial of the heat shock protein 90 inhibitor, retaspimycin hydrochloride (IPI-504), in patients with castration-resistant prostate cancer.[Pubmed:21762967]
Urology. 2011 Sep;78(3):626-30.
OBJECTIVE: To evaluate clinical activity and safety of retaspimycin hydrochloride (IPI-504) in patients with castration-resistant prostate cancer (CRPC). METHODS: A single-arm trial was conducted in 2 cohorts: group 1, chemotherapy naive; group 2, docetaxel-treated. IPI-504 was administered intravenously at 400 mg/m2 on days 1, 4, 8, and 11 of a 21-day cycle. Trial expansion was planned if >/=1 prostate-specific antigen (PSA) or radiographic response was noted per cohort. Pharmacokinetic samples were collected after the first dose; safety was assessed throughout. RESULTS: A total of 19 patients were enrolled (4 in group 1; 15 in group 2), with a median age of 66 years (range 49-78). Group 2 had received a median of 2 previous chemotherapy regimens. All group 2 patients had bone metastases; 66% had measurable soft tissue or visceral metastases. One group 1 patient remained on-trial for 9 cycles; his PSA level declined 48% from baseline. No PSA response was observed in the other patients. Adverse events reported in >25% of the study population included nausea (47%), diarrhea (42%), fatigue (32%), anorexia (26%), and arthralgia (26%). Two patients in group 2 died on-trial, involving study drug-related events of hepatic failure and ketoacidosis, respectively. CONCLUSION: Heat shock protein 90 inhibition with IPI-504 administered as a single agent had a minimal effect on the PSA level or tumor burden and was associated with unacceptable toxicity in several patients. Therefore, additional evaluation in CRPC patients is not warranted. IPI-504 is being investigated at less-intensive doses and schedules in other tumor types.
Retaspimycin hydrochloride (IPI-504): a novel heat shock protein inhibitor as an anticancer agent.[Pubmed:19642950]
Expert Opin Investig Drugs. 2009 Sep;18(9):1375-83.
Heat shock proteins are vital to cell survival under conditions of stress. They bind client proteins to assist in protein stabilization, translocation of polypeptides across cell membranes and recovery of proteins from aggregates. Heat shock protein inhibitors are a diverse group of novel agents that have been demonstrated to have pro-apoptotic effects on malignant cells through inhibition of ATP binding on the ATP/ADP-binding pocket of the heat shock protein. Initial development of heat shock protein 90 inhibitors, geldanamycin and 17-AAG, were limited by hepatotoxicity and the need for solvent carrying agents. In contrast, retaspimycin, or IPI-504, a derivative of geldanamycin and 17-AAG, is highly soluble in water and generally well tolerated. In Phase I/II trials, retaspimycin has shown activity in NSCLC and gastrointestinal stromal tumor. The most promising activity was observed in gastrointestinal stromal tumors. Phase I/II trials are currently underway to evaluate the dosing schedules and activity of IPI-504 in breast cancer. Given the in vitro activity in diffuse large B-cell lymphoma, mantle cell lymphoma, melanoma, leukemia and pancreatic cancer, current and future trials are of clinical interest. This article reviews IPI-504 and its utility in a wide variety of cancer phenotypes.
A phase 1 study of IPI-504 (retaspimycin hydrochloride) in patients with relapsed or relapsed and refractory multiple myeloma.[Pubmed:21851215]
Leuk Lymphoma. 2011 Dec;52(12):2308-15.
Abstract A phase 1 study of IPI-504 (Retaspimycin hydrochloride) administered intravenously twice weekly for 2 weeks at 22.5, 45, 90, 150, 225, 300 or 400 mg/m(2) followed by 10 days off-treatment was conducted to determine the safety and maximum tolerated dose (MTD) of IPI-504 in patients with relapsed or relapsed/refractory multiple myeloma (MM). Anti-tumor activity and pharmacokinetics were also evaluated. Eighteen patients (mean age 60.5 years; median 9 prior therapies) were enrolled. No dose-limiting toxicities (DLTs) were reported for IPI-504 doses up to 400 mg/m(2). The most common treatment-related adverse event was grade 1 infusion site pain (four patients). All other treatment-related events were assessed as grade 1 or 2 in severity. The area under the curve (AUC) increased with increasing dose, and the mean half-life was approximately 2-4 h for IPI-504 and its metabolites. Four patients had stable disease, demonstrating modest single-agent activity in relapsed or relapsed/refractory MM.
A phase I study of the HSP90 inhibitor retaspimycin hydrochloride (IPI-504) in patients with gastrointestinal stromal tumors or soft-tissue sarcomas.[Pubmed:24045182]
Clin Cancer Res. 2013 Nov 1;19(21):6020-9.
PURPOSE: Heat shock protein 90 (HSP90) is required for the proper folding, function, and stability of various client proteins, two of which (KIT and PDGFRalpha) are critical in the pathogenesis and progression of gastrointestinal stromal tumors (GIST). This phase I study investigated the safety and maximum tolerated dose (MTD) of retaspimycin hydrochloride (IPI-504), a novel potent and selective HSP90 inhibitor, in patients with metastatic and/or unresectable GIST or other soft-tissue sarcomas (STS). EXPERIMENTAL DESIGN: IPI-504 was administered intravenously at doses ranging from 90 to 500 mg/m(2) twice weekly for 2 weeks on/1 week off. Safety, pharmacokinetic, and pharmacodynamic profiles were determined. Response was assessed by Response Evaluation Criteria for Solid Tumors (RECIST) 1.0 and optionally via 18-fluorodeoxyglucose positron emission tomography (18-FDG-PET) imaging. RESULTS: Fifty-four patients received IPI-504; 37 with GIST and 17 with other STS. The MTD was 400 mg/m(2) twice weekly for 2 weeks on/1 week off. Common related adverse events were fatigue (59%), headache (44%), and nausea (43%). Exposure to IPI-504, 17-AAG, and 17-AG increased with IPI-504 dose. Stable disease (SD) was observed in 70% (26 of 37) of patients with GIST and 59% (10 of 17) of patients with STS. There was one confirmed partial response (PR) in a patient with GIST and one PR in a patient with liposarcoma. Metabolic partial responses occurred in 11 of 29 (38%) patients with GIST. CONCLUSIONS: In this study of advanced GIST or other STS, IPI-504 was generally well-tolerated with some evidence of antitumor activity, serving as a clinical proof-of-concept that HSP90 inhibition remains a promising strategy.
