Why does CAS 142891-20-1 appear in more than one EU cosmetic annex?

A substance identified by CAS 142891-20-1 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.

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Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 142891-20-1 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 142891-20-1

Q: How do I use CAS 142891-20-1 for compliance screening?

Cross-reference CAS 142891-20-1 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 142891-20-1 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 142891-20-1

CAS 142891-20-1PubChem CID 5851439

2-Propenoic acid, 2-chloro-3-(2-chloro-5-(1,3,4,5,6,7-hexahydro-1,3-dioxo-2H-isoindol-2-yl)phenyl)-, ethyl ester, (2Z)-

Cinidon ethyl is a carboxylic ester and organochlorine compound that is the ethyl ester of cinidon. It has a role as a herbicide. It is an ethyl ester, a member of isoindoles and a member of monochlorobenzenes. — ChEBI

IUPAC name: ethyl (Z)-2-chloro-3-[2-chloro-5-(1,3-dioxo-4,5,6,7-tetrahydroisoindol-2-yl)phenyl]prop-2-enoate

Molecular formula: C19H17Cl2NO4
Molecular weight: 394.2 g/mol
Exact mass: 393.0534634 Da
XLogP3: 4.5
Topological polar surface area: 63.7 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 4
Covalent units: 1
Defined stereocentres: 0

Also known as

Cinidon-ethylcinidon ethylCHEBI:63927ethyl (2Z)-2-chloro-3-(2-chloro-5-(1,3,4,5,6,7-hexahydro-1,3-dioxo-2H-isoindol-2-yl)phenyl)-2-propenoateethyl (2Z)-2-chloro-3-[2-chloro-5-(1,3-dioxo-1,3,4,5,6,7-hexahydro-2H-isoindol-2-yl)phenyl]prop-2-enoateethyl (2Z)-2-chloro-3-(2-chloro-5-(1,3-dioxo-1,3,4,5,6,7-hexahydro-2H-isoindol-2-yl)phenyl)prop-2-enoateRefChem:577186604-318-6

14 more reported names

Cinidon EhylCinidon-ethyl [ISO]UNII-KXK8669936ethyl (2Z)-2-chloro-3-[2-chloro-5-(1,3-dioxo-1,3,4,5,6,7-hexahydro-2H-isoindol-2-yl)phenyl]acrylateBINGOLOTUSCINIDON-ETHYL [MI]C19H17Cl2NO4BAS-615HNNKKTZOEKDFTBU-YBEGLDIGSA-NCinidon-ethyl, PESTANAL(R), analytical standardETHYL (Z)-2-CHLORO-3-(2-CHLORO-5-(CYCLOHEX-1-ENE-1,2-DICARBOXIMIDO)PHENYL)ACRYLATE(2Z)-2-CHLORO-3-(2-CHLORO-5-(1,3,4,5,6,7-HEXAHYDRO-1,3-DIOXO-2H-ISOINDOL-2-YL)PHENYL)-2-PROPENOIC ACID ETHYL ESTERETHYL (Z)-2-CHLORO-3-(2-CHLORO-5-(1,3-DIOXO-4,5,6,7-TETRAHYDROISOINDOL-2-YL)PHENYL)ACRYLATE

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:63927
EPA DTXSID:DTXSID1036753

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 142891-20-1

1 total

Annex

Entry

1534

Cinidon ethyl (ISO); ethyl (Z)-2-chloro-3-[2-chloro-5-(cyclohex-1-ene-1,2-dicarboximido)phenyl]acrylate

604-318-6

CMR

How CAS 142891-20-1 is used on this site

CAS 142891-20-1 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 142891-20-1 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 142891-20-1 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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