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Citronitrile (3-methyl-5-phenylpent-2-enenitrile)

(E)-3-Methyl-5-phenylpent-2-enenitrile

Citronitrile

Aromatic nitrile · C₁₂H₁₃N

Chemical structure of Citronitrile (3-methyl-5-phenylpent-2-enenitrile)
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
93893-89-1
Molecular formula
C₁₂H₁₃N
Molecular weight
171.24 g/mol
Origin
Synthetic
Odor family
Citrus
Note
Top
Aroma
Lemon and orange peel with a floral touch; stable in alkali.

History

Nitriles are used in place of citrus aldehydes in harsh media because the nitrile group does not oxidise like an aldehyde.

In perfumery

Used for lemon notes in soap, detergent and cleaners.

Connections

EvokesLemon

Regulatory status

IFRA restricted
IFRA 51
Restricted by an IFRA Standard (entry "3-Methyl-5-phenylpent-2-enenitrile"), current version issued at Amendment 51. Maximum levels differ across the 12 product categories.
EU CosReg
No specific entry in Annex II or III of Regulation (EC) 1223/2009.
EU allergen 2023/1545
Not on the list of fragrance allergens requiring labelling, including after Regulation (EU) 2023/1545.

Sources

  1. NCI/CADD Chemical Identifier Resolver, CAS 93893-89-1
  2. IFRA Standards Library, Amendments up to 51
  3. Regulation (EC) No 1223/2009, consolidated text of 18.05.2026, Annexes II and III