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InventoryRef 3749812/08/2020

RIBOFLAVIN

Riboflavin

RIBOFLAVIN is linked to 1 EU annex record on this page. Inventory note: IV/145.

Regulatory evidence by market

This matrix separates verified ingredient rules from sources that are mapped but not yet imported. No imported rule does not mean the ingredient is permitted.

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MarketEvidence statusRecordsSource language
European UnionEvidence linked
Positive-list entry with conditions
Open this evidence
1English and EU languages
Great BritainSource mapped
Official source mapped; ingredient rule not imported
0English
CanadaSource mapped
Official source mapped; ingredient rule not imported
0English and French
New ZealandSource mapped
Official source mapped; ingredient rule not imported
0English
ASEANSource mapped
Official source mapped; ingredient rule not imported
0English and national languages
ChinaSource mapped
Official source mapped; ingredient rule not imported
0Chinese with selected English material
JapanSource mapped
Official source mapped; ingredient rule not imported
0Japanese; official English translation available
South KoreaSource mapped
Official source mapped; ingredient rule not imported
0Korean with some English names
United StatesSource mapped
Official source mapped; ingredient rule not imported
0English
AustraliaSource mapped
Official source mapped; ingredient rule not imported
0English
BrazilSource mapped
Official source mapped; ingredient rule not imported
0Portuguese with INCI crosswalks
IndiaSource mapped
Official source mapped; ingredient rule not imported
0English and Hindi
Saudi ArabiaSource mapped
Official source mapped; ingredient rule not imported
0Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 83-88-5
CAS 83-88-5PubChem CID 493570

Riboflavin

Riboflavin is D-Ribitol in which the hydroxy group at position 5 is substituted by a 7,8-dimethyl-2,4-dioxo-3,4-dihydrobenzo[g]pteridin-10(2H)-yl moiety. It is a nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, and leafy vegetables, but the richest natural source is yeast. The free form occurs only in the retina of the eye, in whey, and in urine; its principal forms in tissues and cells are as flavin mononucleotide and flavin-adenine dinucleotide. It has a role as an antioxidant, a cofactor, a photosensitizing agent, an anti-inflammatory agent, a mouse metabolite, a plant metabolite, an Escherichia coli metabolite, a food colouring, a fundamental metabolite and a human urinary metabolite. It is a vitamin B2 and a flavin. It is a conjugate acid of a riboflavin(1-). ChEBI

IUPAC name
7,8-dimethyl-10-[(2S,3S,4R)-2,3,4,5-tetrahydroxypentyl]benzo[g]pteridine-2,4-dione
Molecular formula
C17H20N4O6
Molecular weight
376.4 g/mol
Exact mass
376.13828437 Da
XLogP3
-1.5
Topological polar surface area
155.0 Ų
Hydrogen-bond donors
5
Hydrogen-bond acceptors
7
Covalent units
1
Defined stereocentres
3

Also known as

vitamin B2RiboflavineLactoflavinVitamin GLactoflavineFlavaxinBeflavineBeflavin
16 more reported names
RibodermRibipcaRibovelLactobeneRibocrisinaRiboflavinaRiboflavinumRibotoneVitaflavineFlaxainRibosynVitamin BiFlavin BBRussupteridine Yellow IIIVitasan B2HYRE
External database identifiers

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 RIBOFLAVIN

INCI name

RIBOFLAVIN

INN name

riboflavin

Ph. Eur. name

riboflavinum

Description

Riboflavin

Record provenance

Inventory reference
37498
Imported identity
RIBOFLAVIN
Source update
12/08/2020
European Commission CosIng source notes

Key data

Restriction
IV/145
Function
COLORANT
Exclusively or mainly intended to colour the cosmetic product, the body as a whole or certain parts thereof, by absorption or reflection of visible light. All authorised colorants are substances in the positive list of Annex IV to the Cosmetics Regulation 1223/2009.
SKIN CONDITIONING - MISCELLANEOUS
Enhancing the appearance of dry and/or damaged skin by reducing flaking and restoring suppleness.

Official EU ingredient-name evidence

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

Records sharing a CAS or EC identity

Ingredients with overlapping formulation functions

Additional official and scientific sources

11 external databases to check this identity in

How RIBOFLAVIN appears in the CosIng inventory

The CosIng inventory lists RIBOFLAVIN as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

RIBOFLAVIN is also tagged with 2 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

RIBOFLAVIN appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for RIBOFLAVIN reads: "IV/145". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, RIBOFLAVIN carries the following function designation(s):

CAS 83-88-5 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.

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

Source note for RIBOFLAVIN

This page combines the CosIng inventory entry for RIBOFLAVIN with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

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

Tools & next steps

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