Why does CAS 133-06-2 appear in more than one EU cosmetic annex?

A substance identified by CAS 133-06-2 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 133-06-2?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 133-06-2 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 133-06-2

Q: How do I use CAS 133-06-2 for compliance screening?

Cross-reference CAS 133-06-2 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 133-06-2 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 133-06-2

CAS 133-06-2PubChem CID 8606

Captan

Captan is a dicarboximide that is 3a,4,7,7a-tetrahydrophthalimide in which the hydrogen attached to the nitrogen is replaced by a trichloromethyl group. A non-systemic fungicide introduced in the 1950s, it is widely used for the control of fungal diseases in fruits, vegetables, and ornamental crops. It has a role as an antifungal agrochemical. It is a member of isoindoles, an organosulfur compound, an organochlorine compound and a phthalimide fungicide. — ChEBI

IUPAC name: 2-(trichloromethylsulfanyl)-3a,4,7,7a-tetrahydroisoindole-1,3-dione

Molecular formula: C9H8Cl3NO2S
Molecular weight: 300.6 g/mol
Exact mass: 298.934133 Da
XLogP3: 2.4
Topological polar surface area: 62.7 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

AacaptanOrthocideMerpanVondcaptanAmercideCaptaneMalipurNeracid

16 more reported names

CaptafCaptexKaptanOrthocide 406TrimegolVancide 89VanicideBangtonCaptabHexacapOsocideUgecapStauffer captanLe captaneVangard KOrthocide 50

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:34608
ChEMBL:CHEMBL388676
EPA DTXSID:DTXSID9020243
PubMed:36842454
PubMed:35395341
PubMed:34303901
PubMed:32949729
PubMed:32870474
PubMed:32745781
PubMed:32736067
PubMed:32194361
PubMed:31558096
PubMed:29950287
PubMed:29228274
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 133-06-2

1 total

Annex

Entry

370

captan (ISO); 1,2,3,6-tetrahydro-N-(trichloromethylthio)phthalimide

205-087-0

CMR

How CAS 133-06-2 is used on this site

CAS 133-06-2 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 133-06-2 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 133-06-2 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.

The INCI Checker accepts ingredient names, CAS numbers and EC numbers. Check this CAS number directly, then verify the result against supplier specification sheets and every linked annex condition.

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Tools & next steps

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