1. Metabolic Enzyme/Protease
  2. Endogenous Metabolite
  3. Ergosterol

Ergosterol (Synonyms: Ergosterin; Provitamin D; Provitamin D2)

Cat. No.: HY-N0181 Purity: >97.0%
Handling Instructions

Ergosterol is the primary sterol found in fungi, with antioxidative, anti-proliferative, and anti-inflammatory effects.

For research use only. We do not sell to patients.

Ergosterol Chemical Structure

Ergosterol Chemical Structure

CAS No. : 57-87-4

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Based on 1 publication(s) in Google Scholar

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Ergosterol is the primary sterol found in fungi, with antioxidative, anti-proliferative, and anti-inflammatory effects.

IC50 & Target

Human Endogenous Metabolite


In Vitro

Ergosterol is a sterol isolated from Grifola frondosa, which can be used in the research of mast cell-dependent allergic diseases. Ergosterol (10, 20, 50 μM) inhibits the antigen-induced release of β-hexosaminidase and histamine in antigen-stimulated RBL-2H3 cells. Ergosterol (20 and 50 μM) significantly reduces the mRNA levels of of IL-4 and TNF-α. Ergosterol (50 μM) inhibits the antigen-induced aggregation of FcεRI[1].

In Vivo

Ergosterol (25, 50 mg/kg, p.o.) significantly mitigates the reduced cardiac performance in rats induced by LPS, increases SOD activity and decreases the formation of MDA, CK-MB, and LDH in LPS-induced sepsis rats[2].

Molecular Weight







Room temperature in continental US; may vary elsewhere.


4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Solvent & Solubility
In Vitro: 

Ethanol : 2.6 mg/mL (6.55 mM; ultrasonic and warming and heat to 80°C)

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.5211 mL 12.6056 mL 25.2111 mL
5 mM 0.5042 mL 2.5211 mL 5.0422 mL
10 mM --- --- ---
*Please refer to the solubility information to select the appropriate solvent.
Cell Assay

RBL-2H3 cells are seeded into 24-well plates containing gelatin-coated cover glasses at 0.75 × 105 cells/well and sensitized with anti-DNP IgE. After culture for 24 hours, the cells cultured on cover glasses are pretreated with or without 50 μM Ergosterol or 1 mM methyl beta cyclodextrin (MβCD) in PIPES buffer for 20 minutes. The cells are then challenged with DNP-HSA (50 ng/mL) for 20 minutes. After washing with ice-cold PBS immediately, the cells are fixed with 3.7% formaldehyde in PBS for 20 minutes and blocked with 1% BSA in PBS. The IgE/α-chain of FcεRI complexes on cell surfaces are detected using goat anti-mouse IgE antiserum, and Alexa Fluor 488-conjugated anti-goat IgG. Fluorescence images are acquired using a laser scanning confocal microscope with Zen software. The data are quantified by counting the aggregation number of FcεRI positive cells and presented as aggregation positive cells/total cells. The cells are counted in six independent micrographs for each sample[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Administration

Experimental myocardial injury in rats is performed by LPS injection (15 mg/kg). Dexmedetomidine (Dex) is used as a positive control. The experimental animals are randomly divided into five groups (n = 10) as follows: Control group, rats receive 2% gum acacia suspension orally at a dose of 2 mL/kg for 5 days, followed by normal saline injected intraperitoneally on day 5; LPS group, rats receive 2% gum acacia suspension at dose of 2 mL/kg for 5 days with LPS simultaneously injected intraperitoneally day 5; LPS+ Dex group, rats are treated with 2 mg/kg Dex suspension followed by LPS injection on day 5; LPS + Ergosterol (25 mg/kg, 50 mg/kg) groups, 25 or 50 mg/kg Ergosterol are given to rats orally for 5 consecutive days, and LPS is injected on day 5. Twelve hours after LPS treatment, blood samples are collected through the retro-orbital plexus. The serum specimens are centrifugated at 4, 000 × g for 15 min and stored at −80°C until needed. Thereafter, rats are anesthetized and sacrificed. Heart tissues are removed and homogenized in ice-cold phosphate buffered saline (50 mM, pH 7.4). Heart tissue homogenates from different groups are centrifuged at 12, 000 × g for 45 min at 4°C and the supernatants retained for further biochemical evaluations[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.


Purity: >97.0%

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ErgosterolErgosterin Provitamin D Provitamin D2Provitamin D2Provitamin D 2Provitamin D-2Endogenous MetaboliteInhibitorinhibitorinhibit

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