Why does CAS 88671-89-0 appear in more than one EU cosmetic annex?

A substance identified by CAS 88671-89-0 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.

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Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 88671-89-0 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 88671-89-0

Q: How do I use CAS 88671-89-0 for compliance screening?

Cross-reference CAS 88671-89-0 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 88671-89-0 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 88671-89-0

CAS 88671-89-0PubChem CID 6336

Myclobutanil

2-(4-chlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)hexanenitrile is a nitrile that is hexanenitrile substituted at the 2-position by p-chlorophenyl and (1,2,4-triazol-1-yl)methyl groups. It is a nitrile, a member of triazoles and a member of monochlorobenzenes. — ChEBI

IUPAC name: 2-(4-chlorophenyl)-2-(1,2,4-triazol-1-ylmethyl)hexanenitrile

Molecular formula: C15H17ClN4
Molecular weight: 288.77 g/mol
Exact mass: 288.1141743 Da
XLogP3: 2.9
Topological polar surface area: 54.5 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

SysthaneRallyNovaSynthane 12ENova (pesticide)Systhane 6 FloNova W(+-)-Myclobutanil

16 more reported names

HOE 39304FB6T1JTM6KZalpha-Butyl-alpha-(4-chlorophenyl)-1H-1,2,4-triazole-1-propanenitrileRH 38662-(4-Chlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)hexanenitrileCHEBI:837292-p-Chlorophenyl-2-(1H-1,2,4-triazol-1-ylmethyl)hexanenitrileRH-38661H-1,2,4-Triazole-1-propanenitrile, alpha-butyl-alpha-(4-chlorophenyl)-RefChem:160293CHEBI:752812-((1H-1,2,4-Triazol-1-yl)methyl)-2-(4-chlorophenyl)hexanenitrileC15H17ClN4Nu-Flow MMyclobutanil Solution in MethanolCaswell No. 723K

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:83729
ChEMBL:CHEMBL1904430
EPA DTXSID:DTXSID8024315
PubMed:39137466
PubMed:36511616
PubMed:32268158
PubMed:32194361
PubMed:30894343
PubMed:30114225
PubMed:29957933
PubMed:28531659
PubMed:26946349
PubMed:25949234
PubMed:25689681
PubMed:25622337

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 88671-89-0

1 total

Annex

Entry

1114

Myclobutanil (ISO) 2-(4-chlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)hexanenitrile

410-400-0

CMR

How CAS 88671-89-0 is used on this site

CAS 88671-89-0 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 88671-89-0 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 88671-89-0 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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