What function does 7-DEHYDROCHOLESTEROL serve in cosmetics?

According to the EU CosIng inventory, 7-DEHYDROCHOLESTEROL carries the following function designation(s): EMULSION STABILISING, SKIN CONDITIONING, VISCOSITY CONTROLLING.

What other records share CAS 434-16-2?

CAS 434-16-2 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains 7-DEHYDROCHOLESTEROL?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 7413115/10/2010

7-DEHYDROCHOLESTEROL

Cholesta-5,7-dien-3(beta)-ol

7-DEHYDROCHOLESTEROL is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 434-16-2

CAS 434-16-2PubChem CID 439423

7-Dehydrocholesterol

Cholesta-5,7-dien-3beta-ol is a Delta(5),Delta(7)-sterol, a 3beta-hydroxy-Delta(5)-steroid, a 3beta-sterol and a cholestanoid. It has a role as a mouse metabolite and a human metabolite. — ChEBI

IUPAC name: (3S,9S,10R,13R,14R,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-ol

Molecular formula: C27H44O
Molecular weight: 384.6 g/mol
Exact mass: 384.339216023 Da
XLogP3: 8.0
Topological polar surface area: 20.2 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 7

Also known as

Provitamin D3Cholesta-5,7-dien-3beta-ol7,8-Didehydrocholesterol(3beta)-Cholesta-5,7-dien-3-ol7-DHC5,7-Cholestadien-3-beta-olBK1IU07GKFcholesta-5,7-dien-3 beta-ol

16 more reported names

NSC-18159CHEBI:17759Cholesta-5,7-dien-3-ol, (3beta)-provitamin D(3)(3S,9S,10R,13R,14R,17R)-10,13-dimethyl-17-((2R)-6-methylheptan-2-yl)-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta(a)phenanthren-3-ol10,13-dimethyl-17-(6-methylheptan-2-yl)-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta(a)phenanthren-3-ol10,13-dimethyl-17-(6-methylheptan-2-yl)-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-olRefChem:105986207-100-5Dehydrocholesterol7-DehydrocholesterinDehydrocholesterindelta7-Cholesteroldelta5,7-CholesterolProvitamin D(sub 3)(3beta)-7-Dehydro Cholesterol

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:17759
ChEMBL:CHEMBL1797131
EPA DTXSID:DTXSID20861933
PubMed:27097157
PubMed:23059950
PubMed:23059855
PubMed:23042628
PubMed:23019649
PubMed:22997279
PubMed:22985726
PubMed:22952050
PubMed:22882119
PubMed:22877869
PubMed:22701574
PubMed:22701466

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for 7-DEHYDROCHOLESTEROL

INCI name

7-DEHYDROCHOLESTEROL

Description

Cholesta-5,7-dien-3(beta)-ol

Record provenance

Inventory reference: 74131
Imported identity: 7-DEHYDROCHOLESTEROL
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for 7-DEHYDROCHOLESTEROL

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Key data

CAS

434-16-2

207-100-5

Restriction

—

Function

EMULSION STABILISING: Helping the process of emulsification and improving emulsion stability and shelf-life.
SKIN CONDITIONING: Maintaining the skin in good condition.
VISCOSITY CONTROLLING: Increasing or decreasing the viscosity (thickness) of cosmetics.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#381 · 7-DEHYDROCHOLESTEROL

Ingredients with overlapping formulation functions

ACER RUBRUM WOOD EXTRACTANTIOXIDANT, BINDING, EMULSION STABILISING

ACETYL MANNOSYLERYTHRITOL LIPIDEMULSION STABILISING, HAIR CONDITIONING, SKIN CONDITIONING, SURFACTANT - CLEANSING

ACETYLATED GLYCOL STEARATEEMULSION STABILISING, SKIN CONDITIONING - EMOLLIENT

ACETYLATED HYDROGENATED SOYBEAN OIL GLYCERYL ESTERSEMULSION STABILISING

ACRYLAMIDE/SODIUM ACRYLOYLDIMETHYLTAURATE COPOLYMEREMULSION STABILISING, VISCOSITY CONTROLLING

ACRYLATES CROSSPOLYMER-4EMULSION STABILISING, FILM FORMING, SURFACTANT - CLEANSING, VISCOSITY CONTROLLING

ACRYLATES/AMINOACRYLATES/C10-30 ALKYL PEG-20 ITACONATE COPOLYMEREMULSION STABILISING

ACRYLATES/BEHENETH-25 METHACRYLATE/HEMA CROSSPOLYMEREMULSION STABILISING, FILM FORMING, HAIR FIXING, VISCOSITY CONTROLLING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How 7-DEHYDROCHOLESTEROL appears in the CosIng inventory

The CosIng inventory lists 7-DEHYDROCHOLESTEROL as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

7-DEHYDROCHOLESTEROL is also tagged with 3 cosmetic functions in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

7-DEHYDROCHOLESTEROL is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, 7-DEHYDROCHOLESTEROL carries the following function designation(s):

CAS 434-16-2 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for 7-DEHYDROCHOLESTEROL

This page reproduces the CosIng inventory entry for 7-DEHYDROCHOLESTEROL from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research 7-DEHYDROCHOLESTEROL and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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