Description

trans-2-Methyl-2-Butenal is a high-purity, unsaturated aldehyde characterized by its distinct chemical reactivity and aroma profile. This compound serves as a versatile intermediate and flavor/fragrance ingredient, valued for its ability to impart green, fruity, and nutty notes. It is essential for manufacturers in the flavor & fragrance, pharmaceutical, and fine chemical synthesis industries seeking reliable, high-quality raw materials.

Application

• Flavor and Fragrance (F&F) Industry: A key building block for creating and enhancing green, apple-like, and nutty flavor nuances in food products, beverages, and perfumery.
• Pharmaceutical Intermediates: Used in the synthesis of more complex molecules for active pharmaceutical ingredients (APIs) and other fine chemicals.
• Organic Synthesis: Acts as a crucial reagent in aldol condensations, Michael additions, and other reactions to construct carbon chains and introduce functional groups.
• Agrochemicals: Employed in the production of certain pesticides and herbicides as a chemical precursor.
• Research & Development: Serves as a standard or starting material in chemical research for studying reaction mechanisms and developing new synthetic pathways.

Basic Information

Product Name	trans-2-Methyl-2-Butenal
CAS No.	497-03-0
Molecular Formula	C5H8O
Molecular Weight	84.12 g/mol
Synonyms	trans-2-Methylcrotonaldehyde; (E)-2-Methyl-2-butenal; Tiglaldehyde; Tiglic aldehyde; 2-Methyl-trans-2-butenal; Crotonaldehyde, 2-methyl-; (E)-2-Methylbut-2-enal
EINECS	207-832-3

Quality Control

Our trans-2-Methyl-2-Butenal is produced and tested under a stringent quality management system 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, identity, and impurity profiles. Our quality commitment aligns with cGMP principles where applicable, supporting its use in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized and should be kept under an inert atmosphere (e.g., nitrogen) for long-term storage to maintain stability and purity. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
trans-Isomer Content	≥ 97.0%
Refractive Index (n20D)	1.443 - 1.447
Specific Gravity (20/20°C)	0.865 - 0.875

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