Molekula
Ergosterol
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Ergosterol is a naturally occurring sterol found in fungi, yeast, and plants, primarily used as a precursor in the industrial synthesis of vitamin D2 (ergocalciferol) and as a research chemical in biochemical studies. It is a white to pale yellow crystalline powder with a molecular formula of C28H44O and a molecular weight of 396.65 g/mol. Store at 2 to 8°C under dry conditions. It has no signal word but carries hazard statement H413 (may cause long lasting harmful effects to aquatic life), so avoid release to the environment.
Molekula supplies Ergosterol at ≥ 97.0% purity (HPLC) in 5 g packs, from £162.00 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 5 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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5 g — £135.00 per pack ex VAT · £162.00 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White/ off white crystalline powder |
| Melting Point | 157 - 164 ℃ |
| Water | ≤ 3.0% |
| Specific rotation | ≤ -120 |
| Assay (HPLC) | ≥ 97.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless crystals |
| Melting Point | 170 °C |
| Boiling Point | 250 °C at 0.01 mmHg |
| Solubility (other solvents) | Slightly soluble in ethanol, ethyl ether, petroleum ether; soluble in benzene, chloroform |
Source: PubChem CID 444679 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90028111 |
| CAS Number | 57-87-4 |
| IUPAC Name | (3S,9S,10R,13R,14R,17R)-17-[(E,2R,5R)-5,6-dimethylhept-3-en-2-yl]-10,13-dimethyl-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-ol |
| EC Number | 200-352-7 |
| Molecular Formula | C28H44O |
| Molecular Weight | 396.65 |
| Exact Mass | 396.3392 |
| SMILES | C[C@H](/C=C/[C@H](C)C(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3C2=CC=C4[C@@]3(CC[C@@H](C4)O)C)C |
| InChIKey | DNVPQKQSNYMLRS-APGDWVJJSA-N |
| InChI | InChI=1S/C28H44O/c1-18(2)19(3)7-8-20(4)24-11-12-25-23-10-9-21-17-22(29)13-15-27(21,5)26(23)14-16-28(24,25)6/h7-10,18-20,22,24-26,29H,11-17H2,1-6H3/b8-7+/t19-,20+,22-,24+,25-,26-,27-,28+/m0/s1 |
| PubChem CID | 444679 |
| REACH Code | Y113 |
| HTS Code | 29369001 |
| Tariff Code | 2936900000 |
Safety & GHS
Hazard statements
- H413 May cause long lasting harmful effects to aquatic life
Precautionary statements
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- (22E,24S)-24-methylcholesta-5,7,22-trien-3beta-ol
- (22E)-ergosta-5,7,22-trien-3beta-ol
- D2, Pro-Vitamin
- Ergosta-5,7,22-trien-3-ol, (3b,22E)-
- Ergosta-5,7,22-trien-3beta-ol
- Ergosta-5,7,22E-trien-3beta-ol
- Ergosterin
- Ergosterol (Provitamin D2)
- Provitamin D2
Frequently asked questions
What is ergosterol primarily used for?
Ergosterol is commonly used as a precursor for vitamin D2 synthesis, in nutritional supplements, and as a standard in biochemical research for sterol analysis.
What is the chemical formula and molecular weight of ergosterol?
The chemical formula is C28H44O with a molecular weight of 396.65 g/mol.
How should ergosterol be stored?
Store ergosterol in a tightly sealed container at 2–8°C to maintain stability and prevent degradation.
What purity grades of ergosterol does Molekula offer?
Molekula supplies ergosterol with an assay of ≥97.0% by HPLC.
Can Molekula provide ergosterol in bulk quantities?
Yes, ergosterol is available in bulk, with custom packaging options for larger orders—please contact us for specific quantities and pricing.
What documentation is provided with an ergosterol order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Where can I buy Ergosterol?
Directly from Molekula, which lists Ergosterol in 5 g packs from £162.00 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.