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CAS 1 record

CAS 203313-25-1

CAS 203313-25-1 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 203313-25-1
CAS 203313-25-1PubChem CID 9969573

3-(2,5-Dimethylphenyl)-8-methoxy-2-oxo-1-azaspiro(4.5)dec-3-en-4-yl ethyl carbonate

Spirotetramat is an azaspiro compound that is methoxycyclohexane which is fused at position 4 to the 5-position of a 1,5-dihydro-2H-pyrrol-2-one that is substituted at positions 3 and 4 by 2,5-dimethylphenyl and (ethoxycarbonyl)oxy groups, respectively (the cis isomer). It is a proinsecticide (via hydrolysis of the ethyl carbonate group to give the corresponding 4-hydroxypyrrol-2-one, "spirotetramat-enol") and is used for the control of a wide range of sucking insects on fruit and potato crops. It has a role as a proinsecticide, an agrochemical and an EC 6.4.1.2 (acetyl-CoA carboxylase) inhibitor. It is a member of benzenes, a member of pyrroles, an azaspiro compound, a carbonate ester and a gamma-lactam. — ChEBI

IUPAC name
[3-(2,5-dimethylphenyl)-8-methoxy-2-oxo-1-azaspiro[4.5]dec-3-en-4-yl] ethyl carbonate
Molecular formula
C21H27NO5
Molecular weight
373.4 g/mol
Exact mass
373.18892296 Da
XLogP3
3.2
Topological polar surface area
73.9 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

3-(2,5-Dimethylphenyl)-8-methoxy-2-oxo-1-azaspiro[4.5]dec-3-en-4-yl ethyl carbonateRefChem:1066441SpirotetramatMoventoUltor(5s,8s)-3-(2,5-Dimethylphenyl)-8-methoxy-2-oxo-1-azaspiro[4.5]dec-3-en-4-yl ethyl carbonateSpirotetramat [ISO]Carbonic acid, cis-3-(2,5-dimethylphenyl)-8-methoxy-2-oxo-1-azaspiro[4.5]dec-3-en-4-yl ethyl ester
16 more reported names
4G7KR034OXcis-3-(2,5-Dimethylphenyl)-8-methoxy-2-oxo-1-azaspiro[4.5]dec-3-en-4-yl ethyl carbonatecis-4-(ethoxycarbonyloxy)-8-methoxy-3-(2,5-xylyl)-1-azaspiro(4.5)dec-3-en-2-oneUNII-4G7KR034OXBYI 1330CIS-3-(2,5-DIMETHYLPHENYL)-8-METHOXY-2-OXO-1-AZASPIRO(4.5)DEC-3-EN-4-YL ETHYL CARBONATEETHYL (5S,8S)-3-(2,5-DIMETHYLPHENYL)-8-METHOXY-2-OXO-1-AZASPIRO[4.5]DEC-3-EN-4-YL CARBONATESpirotetramat (>90%)SPIROTETRAMAT [MI]CHEBI:81975CLSVJBIHYWPGQY-UHFFFAOYSA-NTox21_302430EBC-54258Carbonic acid, cis-3-(2,5-dimethylphenyl)-8-methoxy-2-oxo-1-azaspiro(4.5)dec-3-en-4-y l ethyl esterHY-120253CAS-203313-25-1
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External database identifiers

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 203313-25-1

1 total

How CAS 203313-25-1 is used on this site

CAS 203313-25-1 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 203313-25-1 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 203313-25-1 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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