Description

(2E,4E)-3-Methyl-5-(2,6,6-Trimethyl-1,3-Cyclohexadien-1-Yl)-2,4-Pentadienal is a high-value, unsaturated aldehyde derivative of β-ionone, prized for its unique structural and olfactory properties. This compound is essential for creating complex, sophisticated fragrance profiles, particularly in the fine fragrance and flavor industries. It serves as a critical key intermediate for synthesizing carotenoids, retinoids, and other high-value aroma chemicals, making it indispensable for manufacturers in the flavor & fragrance, cosmetic, and specialty chemical sectors.

Application

• Fragrance & Flavor Intermediate: A key building block for the synthesis of high-value aroma chemicals like β-damascone and other ionone derivatives, imparting fruity, floral, and woody notes.
• Fine Fragrance Formulation: Used as a specialty ingredient in premium perfumes, colognes, and personal care products to add depth and complexity to fragrance accords.
• Vitamin A & Carotenoid Synthesis: Serves as a crucial precursor in the industrial synthesis of Vitamin A (retinol) and various carotenoid pigments.
• Specialty Chemical Manufacturing: Employed in organic synthesis for creating complex molecules used in pharmaceuticals and agrochemical research.
• Cosmetic Ingredients: Incorporated into formulations for high-end skincare and color cosmetics where specific scent profiles are required.
• Food Flavoring Agent (indirect): Used in the production of flavoring substances that contribute to natural fruit and berry flavor profiles.

Basic Information

Product Name	(2E,4E)-3-Methyl-5-(2,6,6-Trimethyl-1,3-Cyclohexadien-1-Yl)-2,4-Pentadienal
CAS No.	25528-87-4
Molecular Formula	C15H20O
Molecular Weight	216.32 g/mol
Synonyms	3-Methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal; (E,E)-Pseudoionone aldehyde; 2,4-Pentadienal, 3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (2E,4E)-; β-Cyclocitrylidene-propenal; Pseudoionone-2-carboxaldehyde; 2,4,6-Pseudoinonatrienal; Dehydro-β-ionylideneacetaldehyde; β-Ionylideneacetaldehyde
EINECS	Contact for details

Quality Control

Our (2E,4E)-3-Methyl-5-(2,6,6-Trimethyl-1,3-Cyclohexadien-1-Yl)-2,4-Pentadienal is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay (by GC/HPLC), isomer content, and impurity profiles. Our quality commitment aligns with the standards demanded by the fragrance, flavor, and pharmaceutical intermediate industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Yellow to amber liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 95.0% (sum of isomers)
(2E,4E)-Isomer Content	≥ 90.0%
Refractive Index (20°C)	1.550 - 1.570
Specific Gravity (20/20°C)	0.950 - 0.970

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.