Molekula
Ergocalciferol - USP CRS
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
Ergocalciferol (Vitamin D2) is a fat-soluble vitamin essential for calcium absorption and bone health, widely used in pharmaceuticals, animal feed supplements, and nutritional formulations. It is a crystalline powder with a pale yellow to white appearance, derived from ergosterol via ultraviolet irradiation. This USP Certified Reference Standard (CRS) ensures high purity and analytical accuracy for quality control in manufacturing and research. CAS: 50-14-6 | Molecular formula: C28H44O | Molecular weight: 396.66 g/mol | Storage: 2–8°C (protected from light and moisture) | Signal word: Danger (toxic if swallowed or in contact with skin, fatal if inhaled, causes damage to organs through prolonged or repeated exposure). Molekula supplies Ergocalciferol USP CRS from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Transport Class | 6.1 |
| Packing Group | II |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystals |
| Odour | Odorless |
| Melting Point | 116.5 °C |
| Water Solubility | 50 mg/L at 25 °C |
| Solubility (other solvents) | Soluble in alcohol, chloroform, ether, and fatty oils |
| pKa | pKa = 6.35 |
| log P (octanol/water) | 10.44 |
Source: PubChem CID 5280793 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90038516 |
| CAS Number | 50-14-6 |
| IUPAC Name | (1S,3Z)-3-[(2E)-2-[(1R,3aS,7aR)-1-[(E,2R,5R)-5,6-dimethylhept-3-en-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexan-1-ol |
| EC Number | 200-014-9 |
| Molecular Formula | C28H44O |
| Molecular Weight | 396.66 |
| Exact Mass | 396.3392 |
| SMILES | C[C@H](/C=C/[C@H](C)C(C)C)[C@H]1CC[C@@H]\2[C@@]1(CCC/C2=C\C=C/3\C[C@H](CCC3=C)O)C |
| InChIKey | MECHNRXZTMCUDQ-RKHKHRCZSA-N |
| InChI | InChI=1S/C28H44O/c1-19(2)20(3)9-10-22(5)26-15-16-27-23(8-7-17-28(26,27)6)12-13-24-18-25(29)14-11-21(24)4/h9-10,12-13,19-20,22,25-27,29H,4,7-8,11,14-18H2,1-3,5-6H3/b10-9+,23-12+,24-13-/t20-,22+,25-,26+,27-,28+/m0/s1 |
| PubChem CID | 5280793 |
| UN Number | UN2811 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29362950 |
| Tariff Code | 2936290000 |
Safety & GHS
-
Toxic
GHS06
-
Serious Health Hazard
GHS08
Hazard statements
- H301 + H311 Toxic if swallowed or in contact with skin
- H330 Fatal if inhaled
- H372 Causes damage to organs through prolonged or repeated exposure
Precautionary statements
- P201 Obtain special instructions before use
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
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.
Synonyms
- Calciferol
- Deltalin
- Drisdol
- Ercalciol
- ergocalciferol
- Ergorone
- Oleovitamin D2
- Ostelin
- Viosterol
- VITAMIN D2
Frequently asked questions
What is ergocalciferol (vitamin D2) used for?
Ergocalciferol is primarily used as a dietary supplement and pharmaceutical ingredient to treat or prevent vitamin D deficiency, rickets, and osteomalacia.
What is the chemical formula and molecular weight of ergocalciferol?
The chemical formula is C₂₈H₄₄O, and the molecular weight is 396.66 g/mol.
What safety precautions should be taken when handling ergocalciferol?
Ergocalciferol is classified as Danger because it is toxic if swallowed or in contact with skin, fatal if inhaled, and causes damage to organs through prolonged or repeated exposure—handle with care, wear gloves, and avoid inhalation or skin contact.
What grade of ergocalciferol does Molekula supply, and is it suitable for pharmaceutical use?
Molekula supplies Ergocalciferol USP CRS, which meets USP standards and is an analytical reference material for identity, assay and quality-control testing in pharmaceutical and nutraceutical analysis. It is not intended for use as an ingredient in drugs, nutraceuticals or dietary supplements.
Can Molekula supply ergocalciferol in bulk quantities?
Yes, Molekula can supply ergocalciferol in bulk, with packaging options tailored to meet your production needs—contact us for specific quantities and logistics.
What documentation comes with an order of ergocalciferol?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS/SDS), and Certificate of Conformance (CoC) to USP CRS standards.
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.