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Belotecan HCl (CKD-602), the hydrochloride of CKD602 which is a Topoisomerase I inhibitor, is a semi-synthetic camptothecin analogue with potential antitumor activity. Belotecan binds to topoisomerase I and inhibits its activity, stabilizing the cleavable complex of topoisomerase I-DNA and preventing topoisomerase I from religating single-stranded DNA breaks. Lethal double-stranded DNA breaks happen when the DNA replication machinery comes into contact with the top technicaloisomerase I-DNA complex, disrupting DNA replication and causing the tumor cell to undergo apoptosis. During DNA replication, reversible single-strand breaks in DNA are mediated by the enzyme topoisomerase I.
Physicochemical Properties
| Molecular Formula | C25H28CLN3O4 |
| Molecular Weight | 469.9605 |
| Exact Mass | 469.177 |
| Elemental Analysis | C, 63.89; H, 6.01; Cl, 7.54; N, 8.94; O, 13.62 |
| CAS # | 213819-48-8 |
| Related CAS # | 256411-32-2; 213819-48-8 (HCl) |
| PubChem CID | 6918340 |
| Appearance | White to yellow solid powder |
| Boiling Point | 772.4ºC at 760mmHg |
| Flash Point | 420.9ºC |
| Vapour Pressure | 4.21E-25mmHg at 25°C |
| LogP | 3.813 |
| Hydrogen Bond Donor Count | 3 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 5 |
| Heavy Atom Count | 33 |
| Complexity | 865 |
| Defined Atom Stereocenter Count | 1 |
| SMILES | Cl[H].O1C([C@](C([H])([H])C([H])([H])[H])(C2C([H])=C3C4C(=C(C5=C([H])C([H])=C([H])C([H])=C5N=4)C([H])([H])C([H])([H])N([H])C([H])(C([H])([H])[H])C([H])([H])[H])C([H])([H])N3C(C=2C1([H])[H])=O)O[H])=O |
| InChi Key | SJKBXKKZBKCHET-UQIIZPHYSA-N |
| InChi Code | InChI=1S/C25H27N3O4.ClH/c1-4-25(31)19-11-21-22-17(12-28(21)23(29)18(19)13-32-24(25)30)15(9-10-26-14(2)3)16-7-5-6-8-20(16)27-22;/h5-8,11,14,26,31H,4,9-10,12-13H2,1-3H3;1H/t25-;/m0./s1 |
| Chemical Name | (19S)-19-ethyl-19-hydroxy-10-[2-(propan-2-ylamino)ethyl]-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4,6,8,10,15(20)-heptaene-14,18-dione;hydrochloride |
| Synonyms | CKD-602; Camtobell; Belotecan Hydrochloride; 213819-48-8; Camtobell hydrochloride; Belotecan HCl; CKD-602; CKD 602; Belotecan (hydrochloride); (S)-4-ethyl-4-hydroxy-11-(2-(isopropylamino)ethyl)-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione hydrochloride;CKD 602; CKD602; Belotecan |
| HS Tariff Code | 2934.99.9001 |
| Storage |
Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: Please store this product in a sealed and protected environment, avoid exposure to moisture. |
| Shipping Condition | Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs) |
Biological Activity
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| Animal Protocol | Mice: Belotecan is administered intraperitoneally to groups A and B at doses of 40 mg/kg, 60 mg/kg, and 0 mg/kg (control group) in order to treat established U87MG gliomas in naked mice. After that, for a total of four doses, the dose is repeated once every four days. Histological measurements of the tumor volume reveal the presence of apoptosis[1]. | |
| References |
[1]. Anticancer effects of CKD-602 (Camtobell\u00ae) via G2/M phase arrest in oral squamous cell carcinoma cell lines. Oncol Lett. 2015 Jan;9(1):136-142. [2]. CKD-602, a camptothecin derivative, inhibits proliferation and induces apoptosis in glioma cell lines. Oncol Rep. 2009 Jun;21(6):1413-9. [3]. Antitumor activity of CKD-602, a camptothecin derivative, in a mouse glioma model. J Clin Neurosci. 2012 Feb;19(2):301-5 [4]. Lesser Toxicities of Belotecan in Patients with Small Cell Lung Cancer: A Retrospective Single-Center Study of Camptothecin Analogs. Can Respir J. 2016;2016:3576201. |
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| Additional Infomation |
Belotecan Hydrochloride is the hydrochloride salt of the semi-synthetic camptothecin analogue belotecan with potential antitumor activity. Belotecan binds to and inhibits the activity of topoisomerase I, stabilizing the cleavable complex of topoisomerase I-DNA, which inhibits the religation of single-stranded DNA breaks generated by topoisomerase I; lethal double-stranded DNA breaks occur when the topoisomerase I-DNA complex is encountered by the DNA replication machinery, DNA replication is disrupted, and the tumor cell undergoes apoptosis. Topoisomerase I is an enzyme that mediates reversible single-strand breaks in DNA during DNA replication. See also: Belotecan (annotation moved to). |
Solubility Data
| Solubility (In Vitro) |
DMSO: 12.5~47 mg/mL (26.6~100.0 mM) Water: ~4 mg/mL |
| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently. (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.1278 mL | 10.6392 mL | 21.2784 mL | |
| 5 mM | 0.4256 mL | 2.1278 mL | 4.2557 mL | |
| 10 mM | 0.2128 mL | 1.0639 mL | 2.1278 mL |