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Rubitecan
Rubitecan
ChemFaces products have been cited in many studies from excellent and top scientific journals
Product Name Rubitecan
Price:
CAS No.: 91421-42-0
Catalog No.: CFN93013
Molecular Formula: C20H15N3O6
Molecular Weight: 393.35 g/mol
Purity: >=98%
Type of Compound: Alkaloids
Physical Desc.: Powder
Source: The barks of Camptotheca acuminata Decne.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download: COA    MSDS
Similar structural: Comparison (Web)  (SDF)
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According to end customer requirements, ChemFaces provide solvent format. This solvent format of product intended use: Signaling Inhibitors, Biological activities or Pharmacological activities.
Size /Price /Stock 10 mM * 1 mL in DMSO / Inquiry
Other Packaging *Packaging according to customer requirements(100uL/well, 200uL/well and more), and Container use Storage Tube With Screw Cap
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Related Screening Libraries
Size /Price /Stock 10 mM * 100 uL in DMSO / Inquiry / In-stock
10 mM * 1 mL in DMSO / Inquiry / In-stock
Related Libraries
Biological Activity
Description: Rubitecan is a novel oral inhibitor of topoisomerase I in the camptothecin class. It shows antitumour activity in patients with refractory pancreatic cancer who have failed prior treatments.
Targets: Topoisomerase
In vivo:
Journal of Clinical Oncology, 2005, 23(16):349S.
Patients rescued by crossover to rubitecan in phase III study of rubitecan capsules versus 5-FU in pancreatic cancer.[Reference: WebLink]
Rubitecan (Orathecin) is a novel oral inhibitor of topoisomerase I in the camptothecin class.
METHODS AND RESULTS:
A Phase III randomized multinational open-label study of Rubitecan versus 5-FU in pancreatic cancer patients who had progressive disease following gemcitabine treatment was undertaken. The primary endpoint was overall survival. Key patient eligibility criteria included pathologic diagnosis of pancreatic cancer, progressive disease on gemcitabine, Karnofsky Performance Status of 50 and life expectancy of 2 months. Rubitecan was administered at 1.5 mg/morally 5 days/week. 5-FU was administered at 600 mg/mintravenously once weekly. Patients who progressed or experienced intolerable toxicity could crossover to the alternate treatment arm. 93 of 224 (41%) 5-FU patients crossed over to Rubitecan rescue. Only 1 of 224 Rubitecan patients crossed over to 5-FU. Main reasons for rescue with Rubitecan were radiologic (75%) and symptomatic (12%) progression on 5-FU. Median survival from randomized baseline was longer for patients who crossed over from 5-FU to Rubitecan rescue compared to patients who did not crossover from 5-FU (184 versus 66 days). 35 of 93 (38%) patients had follow-up scans after the initiation of Rubitecan rescue and were evaluable for tumor response assessment. 14 of 35 (40%) patients achieved tumor growth control (4 had objective tumor responses and 10 had disease stabilization). The most common Grade 3/4 adverse events with Rubitecan were myelotoxicity (34%) and gastrointestinal (14%). All deaths on study were primarily related to disease progression.
CONCLUSIONS:
These results support that patients with refractory/resistant pancreatic cancer, who have progressed on gemcitabine and 5-FU, can derive benefit from Rubitecan, an oral medication that can be taken at home with manageable toxicity.
Clin Colorectal Cancer. 2004 Sep;4(3):163-80.
Topoisomerase I inhibitors in the treatment of gastrointestinal cancer: from intravenous to oral administration.[Pubmed: 15377400]
This article reviews the current status of the topoisomerase I (top I) inhibitors in the treatment of gastrointestinal (GI) malignancies.
METHODS AND RESULTS:
We focus on oral drug administration, the mode of administration that is generally preferred by patients with cancer. However, the great majority of the studies have been performed with intravenous (I.V.) administration. The most extensively investigated GI malignancy in phase I/II studies is colorectal cancer (CRC), for which I.V. irinotecan is currently approved in the United States and Europe. We discuss the activity and efficacy of irinotecan as a single agent in CRC and in combination regimens. Also, results obtained with monotherapy and in combination treatment in other GI malignancies such as esophageal, gastric, and pancreatic cancer are discussed. Few phase I studies have been performed with oral irinotecan and its clinical activity has not yet been fully determined. Several top I inhibitors are discussed, including topotecan, 9-aminocamptothecin, Rubitecan, exatecan, and lurtotecan. None of these agents, given orally or intravenously, have shown activity in CRC similar to that of I.V. irinotecan. However, several agents show promising results in other GI malignancies, eg, Rubitecan and exatecan in pancreatic cancer. A complicating factor in the oral administration of the top I inhibitors is the often encountered low and variable oral bioavailability. This can partly be explained by the high affinity for the drug efflux pumps BCRP (ABCG2) and P-glycoprotein, which are highly expressed in the epithelial apical membrane of the GI tract.
CONCLUSIONS:
A novel approach to improve the oral bioavailability of the top I inhibitors by temporary blockade of the drug transporter BCRP is described.
Rubitecan Description
Source: The barks of Camptotheca acuminata Decne.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals

Cell. 2018 Jan 11;172(1-2):249-261.e12.
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Calculate Dilution Ratios(Only for Reference)
1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.5423 mL 12.7113 mL 25.4227 mL 50.8453 mL 63.5566 mL
5 mM 0.5085 mL 2.5423 mL 5.0845 mL 10.1691 mL 12.7113 mL
10 mM 0.2542 mL 1.2711 mL 2.5423 mL 5.0845 mL 6.3557 mL
50 mM 0.0508 mL 0.2542 mL 0.5085 mL 1.0169 mL 1.2711 mL
100 mM 0.0254 mL 0.1271 mL 0.2542 mL 0.5085 mL 0.6356 mL
* Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
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Price: $ / mg
Kojic acid

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Mogroside IIe

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