5-Methoxysterigmatocystin
Based on 1 publication(s) in Google Scholar
5-Methoxysterigmatocystin is a mycotoxin with cytotoxic and genotoxic properties. 5-Methoxysterigmatocystin exhibits cytotoxicity against cancer cells A549 and HepG2 (IC50 of 5.5 and 0.7 μM), and induces DNA damage. 5-Methoxysterigmatocystin is a photosensitizer, which utilizes the visible to generate singlet oxygen (1O2).
For research use only. We do not sell to patients.
- CAS No.: 22897-08-1
- Formula: C19H14O7
- Molecular Weight:354.31
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications Citing Use of MedChemExpress (MCE) 5-Methoxysterigmatocystin
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Biological Activity
Description
Chemical Information
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CAS No. 22897-08-1
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Molecular Weight 354.31
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Formula C19H14O7
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SMILES
O=C1C2=C(OC3=C1C(O)=CC=C3OC)C4=C(O[C@]5([H])[C@@]4([H])C=CO5)C=C2OC
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Structure Classification
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Initial Source
mycelium of an Aspergillus species
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications (1)
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Journal Impact Factor
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Most Recent
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Phytomedicine
Erzhi pill enhances methotrexate efficacy in rheumatoid arthritis bone homeostasis via activation of the IDO1-KYN-AhR pathway. [Abstract]2026 May 14:157:158290. PMID: 42208105
Protocols
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Cell Cytotoxicity Assay
Cytotoxicity assays are usually based on the assessment of cell membrane damage, which can also be indirectly detected by measuring cell viability. Detection methods include MTT assay, CKK-8 assay, LDH assay and ATP assay, etc.
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Mammalian live/dead viability and cytotoxicity staining
Live/dead viability and cytotoxicity staining assays are based on the simultaneous detection of intracellular esterase activity in metabolically active (viable) cells and membrane integrity loss in non-viable cells. In commonly used dual-staining approaches, membrane-permeant fluorogenic substrates are converted by intracellular esterases into fluorescent products in live cells, while impermeant DNA-binding dyes selectively enter cells with compromised plasma membranes and label nucleic acids in dead or dying cells, enabling discrimination between viable and non-viable populations by fluorescence microscopy or flow cytometry.
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Genotoxicity/Mutagenicity Study
The bacterial reverse mutation assay detects point mutations that restore amino-acid prototrophy in auxotrophic Salmonella typhimurium or Escherichia coli tester strains; after exposure to a test article, mutagenic activity is read out as an increased number of revertant colonies on minimal agar compared with the vehicle control. The assay uses tester strains with different mutation targets so that base-substitution and frameshift mutagens can be detected, and testing is performed with and without exogenous mammalian metabolic activation because some chemicals require biotransformation to become mutagenic.
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Cell Viability Determination by MTT Colorimetric Assay
The following protocol uses the MTT colorimetric assay as a classic literature-established method for assessing cell viability/metabolic activity in cultured mammalian cells. MTT[3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] is reduced by metabolically active cells to a colored formazan product; the amount of formazan is quantified spectrophotometrically and provides an indirect measure of metabolically active viable cells. Importantly, MTT reduction reflects cellular oxidoreductase/metabolic activity rather than an absolute direct count of living cells, so changes in cellular metabolism can alter the signal independently of cell number.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)