SN 38

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Cat.No. 2684 - SN 38 | C22H20N2O5 | CAS No. 86639-52-3
Description: DNA topoisomerase I inhibitor; antitumor
Alternative Names: 7-Ethyl-10-hydroxycamptothecin
Chemical Name: (4S)-4,11-Diethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)dione
Purity: ≥98% (HPLC)
Datasheet
Citations (2)
Literature

Biological Activity

Active metabolite of CPT-11 (Cat. No. 2688) that inhibits DNA topoisomerase I (IC50 values are 0.74 and 1.9 μM in P388 and Ehrlich cells respectively). Inhibits DNA and RNA synthesis (IC50 values are 0.077 and 1.3 μM respectively) but does not affect protein synthesis. Displays potent antitumor activity against a range of human tumor cell lines (IC50 values are 3.3, 13, 19 and 22 nM for HCT-116, BEL-7402, HL60 and HELA cells respectively).

Compound Libraries

SN 38 is also offered as part of the Tocriscreen Plus. Find out more about compound libraries available from Tocris.

Technical Data

M. Wt 392.4
Formula C22H20N2O5
Storage Store at +4°C
Purity ≥98% (HPLC)
CAS Number 86639-52-3
PubChem ID 104842
InChI Key FJHBVJOVLFPMQE-QFIPXVFZSA-N
Smiles OC1=CC=C(N=C(C(N3C4)=CC([C@](CC)(O)C(OC5)=O)=C5C3=O)C4=C2CC)C2=C1

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

All Tocris products are intended for laboratory research use only.

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
Solubility
DMSO 39.24 100

Preparing Stock Solutions

The following data is based on the product molecular weight 392.4. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 2.55 mL 12.74 mL 25.48 mL
5 mM 0.51 mL 2.55 mL 5.1 mL
10 mM 0.25 mL 1.27 mL 2.55 mL
50 mM 0.05 mL 0.25 mL 0.51 mL

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Product Datasheets

Certificate of Analysis / Product Datasheet
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Safety Datasheet

References

References are publications that support the products' biological activity.

Kawato et al (1991) Intracellular roles of SN-38, a metabolite of the camptothecin derivative CPT-11, in the antitumor effect of CPT-11. Cancer Res. 51 4187 PMID: 1651156

Gao et al (2005) Synthesis and antitumor activity of the hexacyclic camptothecin derivatives. Bioorg.Med.Chem.Lett. 15 3233 PMID: 15913996

Koizumi et al (2006) Novel SN-38-incorporating ploymeric micelles, NK012, eradicate vascular endothelial growth factor-secreting bulky tumors. Cancer Res. 66 10048 PMID: 17047068


If you know of a relevant reference for SN 38, please let us know.

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Keywords: SN 38, supplier, DNA, topoisomerase, I, inhibitors, inhibits, antitumor, Isomerases, SN38, chemotherapeutics, 7-Ethyl-10-hydroxycamptothecin, DNA, Topoisomerase, Tocris Bioscience

2 Citations for SN 38

Citations are publications that use Tocris products. Selected citations for SN 38 include:

Jonchère et al (2015) Irinotecan treatment and senescence failure promote the emergence of more transformed and invasive cells that depend on anti-apoptotic Mcl-1. Oncotarget 6 409 PMID: 25565667

Vétillard et al (2015) Akt inhibition improves irinotecan treatment and prevents cell emergence by switching the senescence response to apoptosis. Exp Neurol 6 43342 PMID: 26485768


Do you know of a great paper that uses SN 38 from Tocris? If so please let us know.

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Literature in this Area

Cancer

Cancer Research Product Guide

A collection of over 750 products for cancer research, the guide includes research tools for the study of:

  • Cancer Metabolism
  • Epigenetics in Cancer
  • Receptor Signaling
  • Cell Cycle and DNA Damage Repair
  • Angiogenesis
  • Invasion and Metastasis
Cell Cycle & DNA Damage Repair

Cell Cycle & DNA Damage Repair Poster

In normal cells, each stage of the cell cycle is tightly regulated, however in cancer cells many genes and proteins that are involved in the regulation of the cell cycle are mutated or over expressed. Adapted from the 2015 Cancer Product Guide, Edition 3, this poster summarizes the stages of the cell cycle and DNA repair. It also highlights strategies for enhancing replicative stress in cancer cells to force mitotic catastrophe and cell death.

Pathways for SN 38

Protocols

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