Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
Annex II Entry 1684 CMR11/11/2022

(RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate

(RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.

Search similar Back to annex Compare
Prohibited substance— Annex II, EU Regulation 1223/2009
Entry: 1684
CMR

Chemical identity and properties

PubChem 2D chemical structure for CAS 1101132-67-5
CAS 1101132-67-5PubChem CID 44473182

Tolpyralate

1-({1-ethyl-4-[3-(2-methoxyethoxy)-2-methyl-4-(methylsulfonyl)benzoyl]-1H-pyrazol-5-yl}oxy)ethyl methyl carbonate is a benzoylpyrazole that is 1H-pyrazole substituted by an ethyl, 3-(2-methoxyethoxy)-2-methyl-4-(methylsulfonyl)benzoyl, and 1-[(methoxycarbonyl)oxy]ethoxy groups at positions 1, 4 and 5, respectively. It is a member of toluenes, an aromatic ether, a sulfone, a benzoylpyrazole, a carbonate ester and an aromatic ketone. — ChEBI

IUPAC name
1-[1-ethyl-4-[3-(2-methoxyethoxy)-2-methyl-4-methylsulfonylbenzoyl]pyrazol-5-yl]oxyethyl methyl carbonate
Molecular formula
C21H28N2O9S
Molecular weight
484.5 g/mol
Exact mass
484.15155165 Da
XLogP3
2.4
Topological polar surface area
141.0 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
10
Covalent units
1
Defined stereocentres
0

Also known as

Tolpyralate [ISO](RS)-1-(1-Ethyl-4-(4-mesyl-3-(2-methoxyethoxy)-o-toluoyl)pyrazol-5-yloxy)ethyl methyl carbonate1-((1-ETHYL-4-(3-(2-METHOXYETHOXY)-2-METHYL-4-(METHYLSULFONYL)BENZOYL)-1H-PYRAZOL-5-YL)OXY)ETHYL METHYL ESTER CARBONIC ACIDrac-tolpyralateShieldExracemic tolpyralate(RS)-tolpyralate(RS)-1-(1-ethyl-4-(4-mesyl-3-(2-methoxyethoxy)-o-toluoyl)-1H-pyrazol-5-yloxy)ethyl methyl carbonate
16 more reported names
(RS)-1-(1-ethyl-4-(4-mesyl-3-(2-methoxyethoxy)-o-toluoyl)pyrazol-5-yloxy)ethyl methyl carbonate;tolpyralate(RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]-1H-pyrazol-5-yloxy}ethyl methyl carbonate(RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate;tolpyralaterac-1-((1-ethyl-4-(3-(2-methoxyethoxy)-2-methyl-4-(methylsulfonyl)benzoyl)-1H-pyrazol-5-yl)oxy)ethyl methyl carbonaterac-1-({1-ethyl-4-[3-(2-methoxyethoxy)-2-methyl-4-(methylsulfonyl)benzoyl]-1H-pyrazol-5-yl}oxy)ethyl methyl carbonateRefChem:898550CHEBI:145506UNII-U30799TIHE1-[2-ethyl-4-[3-(2-methoxyethoxy)-2-methyl-4-methylsulfonylbenzoyl]pyrazol-3-yl]oxyethyl methyl carbonateXRF - Setting Up Sample: RoHS, 32 x 5 mmXRF-monitor glass, O 32x5 mmXRF-monitor glasses, O 40x5 mmXRF - Setting Up Sample, O 32x5 mmXRF - Setting Up Sample, O 40x5 mmXRF - Setting Up Sample, O 40x6 mm1-((1-Ethyl-4-(3-(2-methoxyethoxy)-2-methyl-4-(methylsulfonyl)benzoyl)-1H-pyrazol-5-yl)oxy)ethyl methyl carbonate
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match44473182

Attributed physical-property, hazard, environmental and use annotations.

  • Signal: Warning Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • GHS Hazard Statements: H351: Suspected of causing cancer [Warning Carcinogenicity]; H361fd: Suspected of damaging fertility; Suspected of damaging the unborn child [Warning Reproductive toxicity]; H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]; H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Precautionary Statement Codes: P203, P260, P273, P280, P318, P319, P391, P405, and P501 (click each P-code to see the statement) Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Signal: Warning Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H351 (100%): Suspected of causing cancer [Warning Carcinogenicity]; H361fd (100%): Suspected of damaging fertility; Suspected of damaging the unborn child [Warning Reproductive toxicity]; H373 (100%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]; H400 (100%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H410 (100%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P203, P260, P273, P280, P318, P319, P391, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 30 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

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

Record details

Chemical name

(RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate

Chemical / IUPAC name

(RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate

Regulatory information

Regulation

(EU) 2022/1531

See every entry this act set

CMR

CategoryCarcinogenicMutagenicReprotoxic
Cat. 2✓—✓

Key data

CAS
1101132-67-5
EC
701-225-3
Annex
II
Entry number
1684

Direct matches are limited for this record, so nearby entries from Annex II are shown as well.

Annex II 1686
Nearby record in the same annex

3-methylpyrazole

CAS: 1453-58-3
EC: 215-925-7

What Annex II means for (RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate

(RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009 and must not be intentionally added. Article 17 separately addresses unintended small quantities that are technically unavoidable under good manufacturing practice and compatible with the Article 3 safety requirement.

Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.

The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.

Compliance checklist

  • Verify this substance is absent from all raw materials and finished formulations.
  • Request absence confirmation or CoA from raw material suppliers.
  • Document the screening result in the Product Information File (PIF).
  • This substance has CMR classification. Review the CMR table above and verify current Annex II/III status before use.

Frequently asked questions

Yes. (RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate is listed in Annex II of EU Cosmetics Regulation 1223/2009 and is prohibited as an intentionally added cosmetic ingredient. Article 17 provides a narrow exception for unintended small quantities that are technically unavoidable under good manufacturing practice, provided the product remains safe under Article 3.

CAS 1101132-67-5 is the unique numerical identifier assigned to (RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate by the Chemical Abstracts Service. In cosmetic compliance work, the CAS number is used to cross-reference the substance across regulatory databases, raw material specifications and safety assessment reports. Multiple EU annex entries may share the same CAS number if the same substance appears under different conditions or in different annexes.

(RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate has a CMR (carcinogenic, mutagenic or reprotoxic) classification under EU CLP Regulation. Under Article 15 of EU Cosmetics Regulation 1223/2009, CMR substances of category 1A or 1B are prohibited in cosmetics unless specifically permitted. Category 2 CMR substances may be used only if assessed safe by the SCCS. Always verify current annex status and any applicable derogations before use.

Use the INCI Checker tool on this site to paste your full ingredient list (INCI) and scan it against all Annex II–VI entries. The tool highlights any ingredients that match restricted, prohibited or allergen-flagged records. This is useful for rapid compliance screening of finished product formulas or raw material declarations.
Open INCI Checker

Source note for Annex II record (RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate

This page summarizes one Annex II record for (RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.

Use this record page to review Annex II conditions for (RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate, but confirm any final regulatory decision against the current official annex wording and source files.

View sourcesView updates

Tools & next steps

Check your formula

Paste a full INCI list to detect (RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate and other flagged EU annex records in one pass.

INCI Checker

Compare entries

Compare (RS)-1-{1-ethyl-4-[4-mesyl-3-(2-methoxyethoxy)-o-toluoyl]pyrazol-5-yloxy}ethyl methyl carbonate; tolpyralate side by side with another annex record to review differences in restrictions, concentrations and annex placement.

Compare

Browse the annex

See all records in Annex II and compare regulatory conditions across substances in this annex.

Open Annex II