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CAS 111-81-9

CAS 111-81-9 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

Chemical identity and properties

PubChem 2D chemical structure for CAS 111-81-9
CAS 111-81-9PubChem CID 8138

Methyl 10-undecenoate

Methyl undecenate is a fatty acid methyl ester of 10-undecenoic acid. It has a role as a metabolite. It is functionally related to a 10-undecenoic acid. ChEBI

IUPAC name
methyl undec-10-enoate
Molecular formula
C12H22O2
Molecular weight
198.30 g/mol
Exact mass
198.161979940 Da
XLogP3
4.2
Topological polar surface area
26.3 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

Methyl undecylenateMethyl undecenateMethyl undecenoate10-Undecenoic acid, methyl ester10-Undecenoic acid methyl estermethyl 10-undecylenateUNII-RWN4DY6S6TRWN4DY6S6T
16 more reported names
NSC-1273Methyl undec-10-enylateEINECS 203-910-810-HENDECENOIC ACID METHYL ESTERMASKOD MNS 01-10AI3-00647FEMA NO. 4253CHEBI:87493EC 203-910-8METHYL UNDECENOATE [WHO-DD]METHYL 10-UNDECENOATE [FHFI]RefChem:157165Methyl 10-undecanoic acidMethyl 10-undecenoic acid10-Undecylenate methyl esterMETHYL UNDECYLENATE [INCI]
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match8138

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

  • Signal: Warning Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]; H332 (100%): Harmful if inhaled [Warning Acute toxicity, inhalation]; H411 (91.4%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P261, P264, P270, P271, P273, P301+P317, P304+P340, P317, P330, P391, 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 1496 reports by companies from 5 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 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 111-81-9

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No records found for this CAS number.

How CAS 111-81-9 is used on this site

CAS 111-81-9 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share 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 111-81-9 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.