Is DEOXYCYTIDINE safe to use in EU cosmetics?

DEOXYCYTIDINE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

What other records share CAS 951-77-9?

CAS 951-77-9 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.

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InventoryRef 9673815/04/2019

DEOXYCYTIDINE

Cytidine, 2'-deoxy-, 2'-Deoxycytidine

DEOXYCYTIDINE 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 951-77-9

CAS 951-77-9PubChem CID 13711

Deoxycytidine

2'-deoxycytidine is a pyrimidine 2'-deoxyribonucleoside having cytosine as the nucleobase. It has a role as a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a human metabolite. It is functionally related to a cytosine. — ChEBI

IUPAC name: 4-amino-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidin-2-one

Molecular formula: C9H13N3O4
Molecular weight: 227.22 g/mol
Exact mass: 227.09060590 Da
XLogP3: -1.8
Topological polar surface area: 108.0 Å²
Hydrogen-bond donors: 3
Hydrogen-bond acceptors: 4
Covalent units: 1
Defined stereocentres: 3

Also known as

2'-deoxycytidineCYTIDINE, 2'-DEOXY-Deoxyribose cytidineCytosine deoxyribosidedCYDDoxecitineDesoxycytidinCytosine, deoxyribonucleoside

16 more reported names

0W860991D6CHEBI:15698MT-1621 COMPONENT 2'-DEOXYCYTIDINE4-amino-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1,2-dihydropyrimidin-2-one4-amino-1-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl)-1,2-dihydropyrimidin-2-one4-amino-1-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl)pyrimidin-2-oneDeoxyriboside, CytosineRefChem:585745Deoxyribonucleoside, Cytosine213-454-14-Amino-1-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidin-2(1H)-oneDesoxycytidin [German]2-Deoxycytidined-cytidineC9H13N3O41beta-2'-Deoxyribofuranosylcytosine, d-

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:15698
ChEMBL:CHEMBL66115
EPA DTXSID:DTXSID70883620
PubMed:23073508
PubMed:23071548
PubMed:23046447
PubMed:23046027
PubMed:23035362
PubMed:23013053
PubMed:22953476
PubMed:22930826
PubMed:22927829
PubMed:22920165
PubMed:22913238
PubMed:22902459

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 DEOXYCYTIDINE

INCI name

DEOXYCYTIDINE

Description

Cytidine, 2'-deoxy-, 2'-Deoxycytidine

Record provenance

Inventory reference: 96738
Imported identity: DEOXYCYTIDINE
Source update: 15/04/2019

European Commission CosIng source notes

Annex records for DEOXYCYTIDINE

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Key data

CAS

951-77-9

213-454-1

Restriction

—

Function

HAIR CONDITIONING: Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.

Official EU ingredient-name evidence

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

#8357 · DEOXYCYTIDINE

Ingredients with overlapping formulation functions

DENDROPANAX MORBIFERUS LEAF EXTRACTHAIR CONDITIONING, SKIN CONDITIONING

DENDROPANAX MORBIFERUS PHYTOPLACENTA EXTRACTANTIMICROBIAL, ANTIOXIDANT, HAIR CONDITIONING, SKIN PROTECTING

DENDROPANAX MORBIFERUS STEM SAPANTI-SEBUM, ANTIMICROBIAL, HAIR CONDITIONING, SKIN CONDITIONING

DEOXYCHOLOYL TRIPEPTIDE-1ANTIOXIDANT; HAIR CONDITIONING; SKIN PROTECTING; SKIN CONDITIONING - HUMECTANT; SKIN CONDITIONING -…

DEOXYGUANOSINEHAIR CONDITIONING

DEOXYPHYTANTRIYL PALMITAMIDE MEAHAIR CONDITIONING, SKIN CONDITIONING

DERMACOCCUS PROFUNDI LYSATE EXTRACTHAIR CONDITIONING; HUMECTANT; SKIN PROTECTING; SKIN CONDITIONING - MISCELLANEOUS

DESAMIDO COLLAGENFILM FORMING, HAIR CONDITIONING, SKIN CONDITIONING

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 DEOXYCYTIDINE appears in the CosIng inventory

The CosIng inventory lists DEOXYCYTIDINE 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.

DEOXYCYTIDINE is also tagged with 1 cosmetic function 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

DEOXYCYTIDINE 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, DEOXYCYTIDINE carries the following function designation(s):

HAIR CONDITIONING

CAS 951-77-9 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 DEOXYCYTIDINE

This page reproduces the CosIng inventory entry for DEOXYCYTIDINE 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 DEOXYCYTIDINE 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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