Why does CAS 139528-85-1 appear in more than one EU cosmetic annex?

A substance identified by CAS 139528-85-1 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 139528-85-1?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 139528-85-1 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 139528-85-1

Q: How do I use CAS 139528-85-1 for compliance screening?

Cross-reference CAS 139528-85-1 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 139528-85-1 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 139528-85-1

CAS 139528-85-1PubChem CID 86422

Metosulam

Metosulam is a sulfonamide. — ChEBI

IUPAC name: N-(2,6-dichloro-3-methylphenyl)-5,7-dimethoxy-[1,2,4]triazolo[1,5-a]pyrimidine-2-sulfonamide

Molecular formula: C14H13Cl2N5O4S
Molecular weight: 418.3 g/mol
Exact mass: 417.0065305 Da
XLogP3: 3.2
Topological polar surface area: 116.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 8
Covalent units: 1
Defined stereocentres: 0

Also known as

TACCO38SY84A64XDE-511N-(2,6-Dichloro-3-methylphenyl)-5,7-dimethoxy-1,2,4-triazolo-(1,5a)-pyrimidine-2-sulfonamide(1,2,4)Triazolo(1,5-a)pyrimidine-2-sulfonamide, N-(2,6-dichloro-3-methylphenyl)-5,7-dimethoxy-[1,2,4]Triazolo[1,5-a]pyrimidine-2-sulfonamide, N-(2,6-dichloro-3-methylphenyl)-5,7-dimethoxy-N-(2,6-dichloro-3-methylphenyl)-5,7-dimethoxy-(1,2,4)triazolo(1,5-a)pyrimidine-2-sulfonamideRefChem:158394

16 more reported names

410-240-1604-145-6Metosulam [ISO]N-(2,6-dichloro-3-methylphenyl)-5,7-dimethoxy[1,2,4]triazolo[1,5-a]pyrimidine-2-sulfonamideC14H13Cl2N5O4SUNII-38SY84A64XN-(2,6-DICHLORO-3-METHYLPHENYL)-5,7-DIMETHOXY(1,2,4)TRIAZOLO(1,5-A)PYRIMIDINE-2-SULFONAMIDECHEBI:82024XDE 511XRD 511DE 511Metosulam 10 |Ig/mL in AcetonitrileMetosulam 10 microg/mL in AcetonitrileMetosulam, PESTANAL(R), analytical standard2',6'-DICHLORO-5,7-DIMETHOXY-3'-METHYL(1,2,4)TRIAZOLO(1,5-A)PYRIMIDINE-2-SULFONANILIDEG87

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:82024
ChEMBL:CHEMBL2288020
EPA DTXSID:DTXSID9047544
PubMed:22431132
PubMed:21221546
PubMed:17416380
PubMed:17313135
PubMed:16212970
PubMed:16013821
PubMed:15861801

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 139528-85-1

1 total

Annex

Entry

1591

Metosulam (ISO); N-(2,6-dichloro-3-methylphenyl)-5,7-dimethoxy[1,2,4]triazolo[1,5-a]pyrimidine-2-sulfonamide

604-145-6

CMR

How CAS 139528-85-1 is used on this site

CAS 139528-85-1 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 139528-85-1 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 139528-85-1 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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