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CAS 1 record

CAS 243973-20-8

CAS 243973-20-8 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 243973-20-8
CAS 243973-20-8PubChem CID 210326

Pinoxaden

Pinoxaden is a pyrazolooxadiazepine that is 7-oxo-1,2,4,5-tetrahydro-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin which is substituted at positions 8 and 9 by 2,6-diethyl-4-methylphenyl and pivaloyloxy groups, respectively. A pro-herbicide (by hydrolysis of the pivalate ester to give the corresponding enol), it is used for control of grass weeds in cereal crops. It has a role as a proherbicide, an agrochemical, a xenobiotic, an EC 6.4.1.2 (acetyl-CoA carboxylase) inhibitor and an environmental contaminant. It is a pyrazolooxadiazepine and a pivalate ester. It is functionally related to a pinoxaden acid. — ChEBI

IUPAC name
[8-(2,6-diethyl-4-methylphenyl)-7-oxo-1,2,4,5-tetrahydropyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl] 2,2-dimethylpropanoate
Molecular formula
C23H32N2O4
Molecular weight
400.5 g/mol
Exact mass
400.23620751 Da
XLogP3
4.6
Topological polar surface area
59.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

U55GLF9LV9CHEBI:835248-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo(1,2-d)(1,4,5)oxadiazepin-9-yl 2,2-dimethylpropanoate8-(2,6-DIETHYL-P-TOLYL)-1,2,4,5-TETRAHYDRO-7-OXO-7H-PYRAZOLO(1,2-D)(1,4,5)OXADIAZEPIN-9-YL 2,2-DIMETHYLPROPIONATEPropanoic acid, 2,2-dimethyl-, 8-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo(1,2-d)(1,4,5)oxadiazepin-9-yl esterPropanoic acid, 2,2-dimethyl-, 8-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl ester(8-(2,6-diethyl-4-methylphenyl)-7-oxo-1,2,4,5-tetrahydropyrazolo(1,2-d)(1,4,5)oxadiazepin-9-yl) 2,2-dimethylpropanoate8-(2,6-diethyl-p-tolyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl 2,2-dimethylpropionate
16 more reported names
RefChem:174366Pinoxaden [ISO]8-(2,6-diethyl-4-methylphenyl)-9-oxo-1H,2H,4H,5H,9H-pyrazolo[1,2-d][1,4,5]oxadiazepin-7-yl 2,2-dimethylpropanoate8-(2,6-diethyl-4-methylphenyl)-7-oxo-1,2,4,5-tetrahydro-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl 2,2-dimethylpropanoateUNII-U55GLF9LV9HSDB 7884NewAxial; 8-(2,6-Diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl 2,2-Dimethyl-propanoic Acid Ester;PINOXADEN [MI]MGOHCFMYLBAPRN-UHFFFAOYSA-NTox21_304033EBC-169037Pinoxaden 100 |Ig/mL in AcetonitrilePinoxaden 100 microg/mL in AcetonitrileCAS-243973-20-8CS-0572079Pinoxaden, PESTANAL(R), analytical standard
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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 243973-20-8

1 total

How CAS 243973-20-8 is used on this site

CAS 243973-20-8 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 243973-20-8 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.

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A substance identified by CAS 243973-20-8 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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