C11H20O
168.28 g/mol
Flavor & FragranceWarning
(E)-2-undecenal
CAS53448-07-0EC258-559-3
Category
Flavor & Fragrance
Compound Class
Other
Primary Use
flavor and fragrance ingredient
(E)-2-undecenal is a chemical compound used as a flavor and fragrance ingredient. It is an unsaturated aldehyde that contributes to fatty, citrus-like odor notes.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongStructure SimilarSimilarity 1.00
2-tridecenal
CAS7774-82-5
Flavor and fragrance ingredient
StrongStructure SimilarSimilarity 0.95
(2E)-2-octenal
CAS2548-87-0
flavor and fragrance ingredient
SimilarStructure SimilarSimilarity 0.81
(2E)-2-heptenal
CAS18829-55-5
Flavoring agent
ReferenceSame Category
Methyl 3-methoxybenzoate
CAS5368-81-0
flavor and fragrance ingredient
ReferenceSame Category
3',5'-Dimethylacetophenone
CAS5379-16-8
Flavor and fragrance intermediate
ReferenceSame Category
Ethyl valerate
CAS539-82-2
Flavor and fragrance ingredient
ReferenceSame Category
Ethyl levulinate
CAS539-88-8
flavor and fragrance ingredient
Safety Reference
Warning
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H411Toxic to aquatic life with long lasting effects
H412Harmful to aquatic life with long lasting effects
H400Very toxic to aquatic life
Customs Tariff Classification
The international HS code for (E)-2-undecenal (CAS 53448-07-0) is 2912.19.
HS code (international, 6-digit)
2912.19
EU CN code (8-digit)
2912 19 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
(E)-undec-2-enal
InChIKey
PANBRUWVURLWGY-MDZDMXLPSA-N
SMILES
CCCCCCCC/C=C/C=O
Synonyms (14)
- (2E)-2-Undecenal
- (2E)-undec-2-enal
- (2e)-undecenal
- (E)-2-undecenal
- (E)-Undec-2-enal
- 2-Undecenal, (2E)-
- 2-Undecenal, (E)-
- 2-Undecenal, trans
- Aldehyde iso C-11
- FEMA 3423
- FEMA NO. 3423, E-
- Undec-2(E)-enal
- undecenal (2e-)
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