InventoryRef cosing-live-916232023-07-24

CUCURBITURILS

Cucurbiturils are cyclic molecules that consist of glycouril units linked by methylene bridges, where n can be 5, 6, 7 or 8.

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

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.

Compare markets

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MarketEvidence statusRecordsSource language
European UnionSource mapped
Inventory entry; no linked annex rule
0English 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 259886-49-2
CAS 259886-49-2PubChem CID 6096206

Cucurbit[5]uril

Molecular formula
C30H30N20O10
Molecular weight
830.7 g/mol
Exact mass
830.24537723 Da
XLogP3
-5.7
Topological polar surface area
236.0 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
10
Covalent units
1
Defined stereocentres
0

Also known as

cucurbit(5)urilCB[5]Cucurbit[n]uril aCHEBI:51435VKSVEHYLRGITRK-UHFFFAOYSA-N
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.

PubChem 2D chemical structure for CAS 259886-50-5
CAS 259886-50-5PubChem CID 6096207

Cucurbit[7]uril (CB[7]) hydrate

IUPAC name
3,5,8,10,13,15,18,20,23,25,28,30,33,35,36,38,40,42,46,48,50,52,54,56,58,60,62,64-octacosazadocosacyclo[30.3.3.36,7.311,12.316,17.321,22.326,27.22,36.231,38.13,35.15,8.110,13.115,18.120,23.125,28.130,33.140,46.142,64.148,50.152,54.156,58.160,62]heptacontane-39,41,43,44,45,47,49,51,53,55,57,59,61,63-tetradecone
Molecular formula
C42H42N28O14
Molecular weight
1163.0 g/mol
Exact mass
1162.34352813 Da
XLogP3
-8.0
Topological polar surface area
330.0 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
14
Covalent units
1
Defined stereocentres
0

Also known as

Cucurbit(7)uril (CB(7)) hydrateRefChem:579526811-749-5cucurbit[7]urilCucurbit[7]uril hydrateCB[7]QQ7SAMPL3, H2
7 more reported names
CHEBI:51434ZDOBFUIMGBWEAB-UHFFFAOYSA-NC42H42N28O14BS-51452HY-104086CS-0030779T9068
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.

PubChem 2D chemical structure for CAS 259886-51-6
CAS 259886-51-6PubChem CID 16133299

Cucurbit[8]uril

IUPAC name
3,5,8,10,13,15,18,20,23,25,28,30,33,35,38,40,41,43,45,47,51,53,55,57,59,61,63,65,67,69,71,73-dotriacontazapentacosacyclo[35.3.3.36,7.311,12.316,17.321,22.326,27.331,32.22,41.236,43.13,40.15,8.110,13.115,18.120,23.125,28.130,33.135,38.145,51.147,73.153,55.157,59.161,63.165,67.169,71]octacontane-44,46,48,49,50,52,54,56,58,60,62,64,66,68,70,72-hexadecone
Molecular formula
C48H48N32O16
Molecular weight
1329.1 g/mol
Exact mass
1328.39260358 Da
XLogP3
-9.1
Topological polar surface area
377.0 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
16
Covalent units
1
Defined stereocentres
0

Also known as

CUCURBIT(8)URILCB[8]Cucurbit[8]uril hydrateCucurbit[8]uril (CB[8]) hydrate, 99+%C48H48N32O16Cucurbit[8]uril (CB[8]) hydrateCurcubit[8]urilCucurbit[8]uril hydrate contains acid of crystalization
8 more reported names
SAMPL3, H3Cucurbit[8]uril (CB[8])CHEBI:51433BS-14119DA-52159HY-103689CS-0031079C8L
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.

PubChem 2D chemical structure for CAS 80262-44-8
CAS 80262-44-8PubChem CID 196163

Cucurbituril

IUPAC name
3,5,8,10,13,15,18,20,23,25,28,30,31,33,35,37,41,43,45,47,49,51,53,55-tetracosazanonadecacyclo[25.3.3.36,7.311,12.316,17.321,22.22,31.226,33.13,30.15,8.110,13.115,18.120,23.125,28.135,41.137,55.143,45.147,49.151,53]hexacontane-34,36,38,39,40,42,44,46,48,50,52,54-dodecone
Molecular formula
C36H36N24O12
Molecular weight
996.8 g/mol
Exact mass
996.29445268 Da
XLogP3
-6.8
Topological polar surface area
283.0 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
12
Covalent units
1
Defined stereocentres
0

Also known as

cucurbit(n)urilcucurbit(n)urilsRefChem:128733CHEBI:51431cucurbit[6]urilCucurbit[6]uril hydrateCucurbit(6)urilCucurbit[n]uril b
11 more reported names
CB[6]CHEBI:51432Cucurbit[6]uril (CB[6]) hydrate, 99%Cucurbit[6]uril hydrate, contains acid of crystalizationCucurbituril [6]C36H36N24O12TSH-00019HY-W130354BS-17595CS-01884403,5,8,10,13,15,18,20,23,25,28,30,31,33,35,37,41,43,45,47,49,51,53,55-tetracosazanonadecacyclo[25.3.3.36,7.311,12.316,17.321,22.2
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 CUCURBITURILS

INCI name

CUCURBITURILS

Description

Cucurbiturils are cyclic molecules that consist of glycouril units linked by methylene bridges, where n can be 5, 6, 7 or 8.

Record provenance

Inventory reference
cosing-live-91623
Imported identity
CUCURBITURILS
Source update
2023-07-24
European Commission CosIng source notes

Key data

Official EU ingredient-name evidence

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

An exact glossary-name match supports label identity; it does not by itself mean that an ingredient is permitted, safe for every use, or free from annex restrictions. Check the regulatory evidence above.

Additional official and scientific sources

Use identifiers from this page to verify chemical identity, hazard context and market-surveillance evidence. These sources add context; they do not replace the applicable cosmetics law.

ECHA CHEM / Information on chemicals

Use as CAS/EC enrichment for REACH/CLP hazard and regulatory status. Treat as targeted enrichment, not simple bulk import.

Open source site

PubChem PUG REST

Use name/CAS lookup to add CID, molecular formula, molecular weight, InChIKey and canonical SMILES.

Lookup identity: 80262-44-8/ 259886-51-6/ 259886-50-5/ 259886-49-2

Open identifier lookup

EU Safety Gate cosmetic product alerts

Published cosmetic product alerts, notifying country, risk, product identifiers and corrective measures

Open source site

ECHA CHEM

EU substance information, REACH context and CLP classification where available.

Open source site

US EPA CompTox

EPA chemistry, exposure and toxicity dashboard search by CAS or name.

Open source site

Cosmetic Ingredient Review safety assessments

Expert Panel conclusions, assessed ingredient groups, use conditions, dates and report documents

Open source site

FDA Global Substance Registration System

UNII identifiers, preferred names, substance types, codes and public substance relationships

Open source site

ILO/WHO International Chemical Safety Cards

Hazards, symptoms, first aid, storage, incompatibilities and physical properties for covered chemicals

Open source site

Japan NITE-CHRIP

Chemical identity, Japanese and foreign legal lists, GHS hazards and exposure-related information

Open source site

NIOSH Pocket Guide to Chemical Hazards

REL, PEL, IDLH, properties, exposure routes, symptoms, target organs, first aid and measurement methods for covered workplace chemicals

Open source site

OECD eChemPortal

Gateway to authority-owned physical-property, fate, ecotoxicity, toxicity, exposure and GHS records

Open source site

How CUCURBITURILS appears in the CosIng inventory

The CosIng inventory lists CUCURBITURILS 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.

CUCURBITURILS 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

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

CAS 80262-44-8/ 259886-51-6/ 259886-50-5/ 259886-49-2 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.

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 CUCURBITURILS

This page reproduces the CosIng inventory entry for CUCURBITURILS 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 CUCURBITURILS 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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