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7-Ethyl-10-Hydroxy-Camptothecin

CAS# 119577-28-5

7-Ethyl-10-Hydroxy-Camptothecin

Catalog No. BCN8386----Order now to get a substantial discount!

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7-Ethyl-10-Hydroxy-Camptothecin: 5mg Please Inquire In Stock
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Chemical structure

7-Ethyl-10-Hydroxy-Camptothecin

3D structure

Chemical Properties of 7-Ethyl-10-Hydroxy-Camptothecin

Cas No. 119577-28-5 SDF Download SDF
PubChem ID 9800670 Appearance Yellow crystalline powder
Formula C22H20N2O5 M.Wt 392.4
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
SMILES CCC1=C2C(=CC3=C(N2)C4=CC5=C(COC(=O)C5(CC)O)C(=O)N4C3)C(=O)C=C1
Standard InChIKey OZESIOWEPLUEAF-QFIPXVFZSA-N
Standard InChI InChI=1S/C22H20N2O5/c1-3-11-5-6-17(25)13-7-12-9-24-16(19(12)23-18(11)13)8-15-14(20(24)26)10-29-21(27)22(15,28)4-2/h5-8,23,28H,3-4,9-10H2,1-2H3/t22-/m0/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.
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.
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.

7-Ethyl-10-Hydroxy-Camptothecin Dilution Calculator

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7-Ethyl-10-Hydroxy-Camptothecin Molarity Calculator

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Preparing Stock Solutions of 7-Ethyl-10-Hydroxy-Camptothecin

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.5484 mL 12.7421 mL 25.4842 mL 50.9684 mL 63.7105 mL
5 mM 0.5097 mL 2.5484 mL 5.0968 mL 10.1937 mL 12.7421 mL
10 mM 0.2548 mL 1.2742 mL 2.5484 mL 5.0968 mL 6.371 mL
50 mM 0.051 mL 0.2548 mL 0.5097 mL 1.0194 mL 1.2742 mL
100 mM 0.0255 mL 0.1274 mL 0.2548 mL 0.5097 mL 0.6371 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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References on 7-Ethyl-10-Hydroxy-Camptothecin

SN-38 loading capacity of hydrophobic polymer blend nanoparticles: formulation, optimization and efficacy evaluation.[Pubmed:27910713]

Drug Dev Ind Pharm. 2017 Mar;43(3):502-510.

One of the most important problems in nanoencapsulation of extremely hydrophobic drugs is poor drug loading due to rapid drug crystallization outside the polymer core. The effort to use nanoprecipitation, as a simple one-step procedure with good reproducibility and FDA approved polymers like Poly(lactic-co-glycolic acid) (PLGA) and Polycaprolactone (PCL), will only potentiate this issue. Considering that drug loading is one of the key defining characteristics, in this study we attempted to examine whether the nanoparticle (NP) core composed of two hydrophobic polymers will provide increased drug loading for 7-Ethyl-10-Hydroxy-Camptothecin (SN-38), relative to NPs prepared using individual polymers. D-optimal design was applied to optimize PLGA/PCL ratio in the polymer blend and the mode of addition of the amphiphilic copolymer Lutrol((R))F127 in order to maximize SN-38 loading and obtain NPs with acceptable size for passive tumor targeting. Drug/polymer and polymer/polymer interaction analysis pointed to high degree of compatibility and miscibility among both hydrophobic polymers, providing core configuration with higher drug loading capacity. Toxicity studies outlined the biocompatibility of the blank NPs. Increased in vitro efficacy of drug-loaded NPs compared to the free drug was confirmed by growth inhibition studies using SW-480 cell line. Additionally, the optimized NP formulation showed very promising blood circulation profile with elimination half-time of 7.4 h.

Assessment of the chemotherapeutic potential of a new camptothecin derivative, ZBH-1205.[Pubmed:27302903]

Arch Biochem Biophys. 2016 Aug 15;604:74-85.

CPT-11 (irinotecan) is a derivative of camptothecin which is a natural product derived from the Chinese tree Camptotheca acuminta and widely used in antitumor therapy. Here, the in vitro anti-tumor activity and associated mechanisms of a novel derivative of camptothecin, ZBH-1205, were investigated in a panel of 9 human tumor cell lines, as well as in HEK 293 and SK-OV-3/DPP, a multi-drug resistant (MDR) cell line, and compared to CPT-11 and 7-Ethyl-10-Hydroxy-Camptothecin (SN38). Comparisons between the different compounds were made on the basis of IC50 values as determined by the MTT assay, and flow cytometry was used to evaluate cell cycle progression, apoptosis, and the levels of pro- and active caspase-3 among different treatment groups. Interaction between the molecules and topoisomerase-1 (Topo-1)-DNA complexes was detected by a DNA relaxation assay. Our results demonstrated that IC50 values for ZBH-1205 ranged from 0.0009 mumol/L to 2.5671 mumol/L, which were consistently lower than IC50 values of CPT-11 or SN38 in the panel of cell lines, including SK-OV-3/DPP. Furthermore, ZBH-1205 was more effective than CPT-11 or SN38 at stabilizing Topo-1-DNA complexes and inducing tumor cell apoptosis. Therefore, ZBH-1205 is a promising chemotherapeutic agent to be further assessed in large-scale clinical trials.

Quantitative Evaluation of Drug Resistance Profile of Cells Expressing Wild-Type or Genetic Polymorphic Variants of the Human ABC Transporter ABCC4.[Pubmed:28677646]

Int J Mol Sci. 2017 Jul 4;18(7). pii: ijms18071435.

Broad-spectrum resistance in cancer cells is often caused by the overexpression of ABC transporters; which varies across individuals because of genetic single-nucleotide polymorphisms (SNPs). In the present study; we focused on human ABCC4 and established cells expressing the wild-type (WT) or SNP variants of human ABCC4 using the Flp-In system (Invitrogen, Life Technologies Corp, Carlsbad, CA, USA) based on Flp recombinase-mediated transfection to quantitatively evaluate the effects of nonsynonymous SNPs on the drug resistance profiles of cells. The mRNA levels of the cells expressing each ABCC4 variant were comparable. 3-(4,5-Dimethyl-2-thiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay clearly indicated that the EC50 values of azathioprine against cells expressing ABCC4 (WT) were 1.4-1.7-fold higher than those against cells expressing SNP variants of ABCC4 (M184K; N297S; K304N or E757K). EC50 values of 6-mercaptopurine or 7-Ethyl-10-Hydroxy-Camptothecin (SN-38) against cells expressing ABCC4 (WT) were also 1.4-2.0- or 1.9-fold higher than those against cells expressing the SNP variants of ABCC4 (K304N or E757K) or (K304N; P403L or E757K); respectively. These results indicate that the effects of nonsynonymous SNPs on the drug resistance profiles of cells expressing ABCC4 can be quantitatively evaluated using the Flp-In system.

Photothermal, Targeting, Theranostic Near-Infrared Nanoagent with SN38 against Colorectal Cancer for Chemothermal Therapy.[Pubmed:28703590]

Mol Pharm. 2017 Aug 7;14(8):2766-2780.

Cancer research regarding near-infrared (NIR) agents for chemothermal therapy (CTT) has shown that agents with specific functions are able to inhibit tumor growth. The aim of current study was to optimize CTT efficacy for treatment of colorectal cancer (CRC) by exploring strategies which can localize high temperature within tumors and maximize chemotherapeutic drug uptake. We designed a new and simple multifunctional NIR nanoagent composed of the NIR cyanine dye, polyethylene glycol, and a cyclic arginine-glycine-aspartic acid peptide and loaded with the anti-CRC chemotherapeutic agent, 7-Ethyl-10-Hydroxy-Camptothecin (SN38). Each component of this nanoagent exhibited its specific functions that help boost CTT efficacy. The results showed that this nanoagent greatly strengthens the theranostic effect of SN38 and CTT against CRC due to its NIR imaging ability, photothermal, enhanced permeability and retention (EPR) effect, reticuloendothelial system avoidance, and angiogenic blood vessel-targeting properties. This NIR nanoagent will help facilitate development of new strategies for treating CRC.

Antitumor potential of a novel camptothecin derivative, ZBH-ZM-06.[Pubmed:29251321]

Oncol Rep. 2018 Feb;39(2):871-879.

Camptothecin (CPT) is a cytotoxic quinoline alkaloid that is used clinically as an anticancer drug. However, the clinical application of CPT is limited due to its low solubility as well as serious and unfathomable side-effects. In the present study, we created a novel 10-hydroxy CPT prodrug, ZBH-ZM06. Its cellular cytotoxic activity was analyzed in terms of cellular viability, acetylcholinesterase (AchE) inhibition, DNA relaxation, cellular cycling and apoptosis properties. Our results showed that the AchE inhibition rate of 10 micromol/l ZBH-ZM-06 was 12.5%, compared to 96.5% for carbonyl-oxycamptothecin (CPT-11). In a chemical stability assay, only 4.9% of ZBH-ZM-06 remained after 4 h at pH 7.4. In addition, 10 micromol/l ZBH-ZM-06 significantly inhibited the tumor cell viability of nine tumor cell lines, compared to CPT-11 and the CPT active ingredient, 7-Ethyl-10-Hydroxy-Camptothecin (SN38) (p<0.01-0.05). In the apoptosis assay, ZBH-ZM-06 increased the ratio of annexin V+/propidium iodide (PI)-/+ cells by flow cytometric analysis (p<0.05). Moreover, ZBH-ZM-06 activated caspase-3 and poly(ADP-ribose)polymerase (PARP) expression by immunoblotting. Furthermore, ZBH-ZM-06 induced a greater G2/M phase arrest ratio, compared to CPT-11 and SN38. These results indicated that ZBH-ZM-06 had higher antitumor activity than CPT-11 and SN38, which was shown by its: i) release of the effective ingredient; ii) growth inhibition of a broad spectrum of tumor cells; iii) inhibition of DNA topoisomerase (Topo-1); and iv) promotion of apoptosis through an intrinsic signaling pathway. Thus, ZBH-ZM-06 may be applied in the preclinic study for cancer treatment.

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