Why does CAS 39236-46-9 appear in more than one EU cosmetic annex?

A substance identified by CAS 39236-46-9 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts — for example, restricted under Annex III with specific conditions, while also appearing in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

How do I check if my formula contains a substance with CAS 39236-46-9?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 39236-46-9 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 39236-46-9

Q: How do I use CAS 39236-46-9 for compliance screening?

Cross-reference CAS 39236-46-9 against your raw material specification sheets and CoA documents. When it appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met. All annex entries sharing this CAS number are listed on this page.

CAS 39236-46-9 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 39236-46-9

CAS 39236-46-9PubChem CID 38258

Imidazolidinyl Urea

Imidurea is a member of ureas. It has a role as an antimicrobial agent. — ChEBI

IUPAC name: 1-[3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl]-3-[[[3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl]carbamoylamino]methyl]urea

Molecular formula: C11H16N8O8
Molecular weight: 388.29 g/mol
Exact mass: 388.10910950 Da
XLogP3: -3.4
Topological polar surface area: 222.0 Å²
Hydrogen-bond donors: 8
Hydrogen-bond acceptors: 8
Covalent units: 1
Defined stereocentres: 0

Also known as

IMIDUREAGermall 115Methanebis(N,N'-(5-ureido-2,4-diketotetrahydroimidazole)-N,N-dimethylol)N,N''-Methylenebis(N'-(1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl)urea)CHEBI:51805N,N''-methylenebis(N'-(3-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl)urea)Urea, N,N''-methylenebis(N'-(3-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl)-N',N'''-methanediylbis{1-[3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl]urea}

16 more reported names

imidazolidinylureaN',N'''-methanediylbis(1-(3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl)urea)RefChem:148001254-372-63-(4-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl)-1-((((4-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl)carbamoyl)amino)methyl)urea1,1'-Methylenebis(3-(3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl)urea)C11H16N8O8Imidurea [NF]IMIDUREA [II]BSPBio_001082Imidurea (NF)Tox21_302325N,N'-Methylenebis[N'-(3-hydroxymethyl-2,5-dioxo-4-imidazolidinyl)urea]3-[3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl]-1-[({[3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl]carbamoyl}amino)methyl]ureaImidurea, United States Pharmacopeia (USP) Reference StandardImidazolinidyl urea

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:51805
ChEMBL:CHEMBL65433
EPA DTXSID:DTXSID2040151
PubMed:31958493
PubMed:31734321
PubMed:29743441
PubMed:27965148
PubMed:25617811
PubMed:23178550
PubMed:22245253
PubMed:21195160
PubMed:20541004
PubMed:15218738
PubMed:10841789
PubMed:1146

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

Records for CAS 39236-46-9

1 total

Annex

Entry

IMIDAZOLIDINYL UREA

N,N''-Methylenebis[N'-[3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl]urea]

254-372-6

Max concentration

How CAS 39236-46-9 is used on this site

CAS 39236-46-9 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 39236-46-9 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.

Frequently asked questions

A substance identified by CAS 39236-46-9 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts. For example, a substance might be restricted under Annex III with specific conditions, and the same CAS might also appear in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

Cross-reference the CAS number against your raw material specification sheets and CoA documents. When a CAS appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met in your formulation. All annex entries sharing this CAS number are listed above.

A CAS number is assigned by the Chemical Abstracts Service (USA) and is globally recognised. An EC number is a European Commission identifier from inventories such as EINECS, ELINCS or the NLP list. Both identifiers may appear in EU cosmetic annex entries. Some substances have both, some have only one, and some older entries may have neither.

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