Ergocalciferol (INN) and Cholecalciferol (vitamins D2 and D3)
Ergocalciferol (INN) and Cholecalciferol (vitamins D2 and D3) is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.
Chemical identity and properties

Vitamin D3
Calciol is a hydroxy seco-steroid that is (5Z,7E)-9,10-secocholesta-5,7,10(19)-triene in which the pro-S hydrogen at position 3 has been replaced by a hydroxy group. It is the inactive form of vitamin D3, being hydroxylated in the liver to calcidiol (25-hydroxyvitamin D3), which is then further hydroxylated in the kidney to give calcitriol (1,25-dihydroxyvitamin D3), the active hormone. It has a role as a geroprotector and a human metabolite. It is a steroid hormone, a secondary alcohol, a seco-cholestane, a hydroxy seco-steroid and a member of D3 vitamins. — ChEBI
- IUPAC name
- (1S,3Z)-3-[(2E)-2-[(1R,3aS,7aR)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexan-1-ol
- Molecular formula
- C27H44O
- Molecular weight
- 384.6 g/mol
- Exact mass
- 384.339216023 Da
- XLogP3
- 7.9
- Topological polar surface area
- 20.2 Ų
- Hydrogen-bond donors
- 1
- Hydrogen-bond acceptors
- 1
- Covalent units
- 1
- Defined stereocentres
- 5
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:28940
- ChEMBL:CHEMBL1042
- EPA DTXSID:DTXSID6026294
- PubMed:40633737
- PubMed:39671242
- PubMed:38588969
- PubMed:38191086
- PubMed:38081571
- PubMed:37244046
- PubMed:36813254
- PubMed:36745886
- PubMed:36603807
- PubMed:36066700
- PubMed:35395231
- PubMed:34051273
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Record details
Chemical name
Ergocalciferol (INN) and Cholecalciferol (vitamins D2 and D3)
Regulatory information
Identified ingredients
Key data
Inventory links for Ergocalciferol (INN) and Cholecalciferol (vitamins D2 and D3)
ERGOCALCIFEROL
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What Annex II means for Ergocalciferol (INN) and Cholecalciferol (vitamins D2 and D3)
Ergocalciferol (INN) and Cholecalciferol (vitamins D2 and D3) is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009 and must not be intentionally added. Article 17 separately addresses unintended small quantities that are technically unavoidable under good manufacturing practice and compatible with the Article 3 safety requirement.
Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.
This record is linked to 3 CosIng inventory ingredients for name and identifier cross-reference. The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.
Compliance checklist
- Verify this substance is absent from all raw materials and finished formulations.
- Request absence confirmation or CoA from raw material suppliers.
- Document the screening result in the Product Information File (PIF).
Frequently asked questions
Source note for Annex II record Ergocalciferol (INN) and Cholecalciferol (vitamins D2 and D3)
This page summarizes one Annex II record for Ergocalciferol (INN) and Cholecalciferol (vitamins D2 and D3) from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.
Use this record page to review Annex II conditions for Ergocalciferol (INN) and Cholecalciferol (vitamins D2 and D3), but confirm any final regulatory decision against the current official annex wording and source files.
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