Helvolic acid
Helvolic acid (Fumigacin) is an antibiotic isolated from Xylaria sp, active against the Gram-positive bacteria.
For research use only. We do not sell to patients.
- CAS No.: 29400-42-8
- Formula: C33H44O8
- Molecular Weight:568.70
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Storage:
-20°C, protect from light, stored under nitrogen
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen)
All Antibiotic Isoforms
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Biological Activity
Description
Cellular Effect
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| HEK293 | IC50 |
2.7 μM
Compound: 5
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Inhibition of TNFalpha-induced NFkappaB activation in human HEK293 cells after 6 hrs by luciferase assay
Inhibition of TNFalpha-induced NFkappaB activation in human HEK293 cells after 6 hrs by luciferase assay
|
[PMID: 32163285] |
Chemical Information
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CAS No. 29400-42-8
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Appearance Solid
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Molecular Weight 568.70
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Formula C33H44O8
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Color White to off-white
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SMILES
C[C@@H]([C@]1([H])[C@H](OC(C)=O)C([C@]([C@@](C[C@@H]/2OC(C)=O)3C)4C)=O)C(C=C[C@]1(C)[C@]4([H])CC[C@@]3([H])C2=C(C(O)=O)/CC/C=C(C)\C)=O
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Synonyms
Fumigacin
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Structure Classification
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Initial Source
Metarhizium anisopliae
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
-20°C, protect from light, stored under nitrogen
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen)
Solvent & Solubility
In Vitro:
DMSO : 10 mg/mL (17.58 mM; Need ultrasonic and warming; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Protocols
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Gram Staining of Tissue Sections
Gram staining of tissue sections is a histochemical technique used to differentiate Gram-positive and Gram-negative bacteria within histological specimens based on differences in bacterial cell wall structure and dye retention, adapted from classical bacteriological Gram staining into tissue-compatible “histological Gram stain” variants. In tissue applications, modifications of the Brown-Hopps and Brown-Brenn methods are commonly used to improve differentiation of microorganisms embedded within host connective tissue and to reduce overstaining or loss of Gram-negative signal, which are known limitations of earlier approaches. The principle relies on crystal violet-iodine complex retention in Gram-positive organisms and subsequent decolorization and counterstaining steps that allow contrast visualization of Gram-negative organisms against tissue background.
Purity & Documentation
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Data Sheet (277 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 1.7584 mL | 8.7920 mL | 17.5840 mL | 43.9599 mL |
| 5 mM | 0.3517 mL | 1.7584 mL | 3.5168 mL | 8.7920 mL | |
| 10 mM | 0.1758 mL | 0.8792 mL | 1.7584 mL | 4.3960 mL | |
| 15 mM | 0.1172 mL | 0.5861 mL | 1.1723 mL | 2.9307 mL |