Description

1 1-Diethoxy-3-Methyl-2-Butene 97 is a high-purity, versatile acetal derivative of 3-methyl-2-butenal, valued for its role as a key synthetic intermediate and protecting group in organic synthesis. Its significance lies in its ability to introduce the prenyl (3-methyl-2-butenyl) moiety under controlled conditions, offering chemists a stable and reactive handle for constructing complex molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and fragrance industries, where it is used to develop active ingredients and specialty chemicals.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring the incorporation of a prenyl side chain.
• Agrochemical Synthesis: Serves as a building block for creating pesticides, herbicides, and plant growth regulators.
• Fragrance and Flavor Ingredient: Acts as a precursor in the production of terpene-based compounds used in perfumery and flavorings.
• Organic Synthesis Reagent: Functions as a protected form of 3-methyl-2-butenal (prenal) in multi-step synthetic routes, including Grignard reactions and nucleophilic additions.
• Specialty Polymer Modifier: Employed in the development of specialty polymers and resins with tailored properties.
• Research & Development: A valuable tool for academic and industrial R&D chemists exploring new synthetic methodologies and compound libraries.

Basic Information

Product Name	1 1-Diethoxy-3-Methyl-2-Butene 97
CAS No.	1740-74-5
Molecular Formula	C9H18O2
Molecular Weight	158.24 g/mol
Synonyms	3-Methyl-2-butenal diethyl acetal; Prenal diethyl acetal; 1,1-Diethoxy-3-methylbut-2-ene; 3-Methyl-2-buten-1-al diethyl acetal; Diethyl (3-methyl-2-butenylidene) acetal; 3,3-Diethoxy-3-methyl-1-butene (tautomeric form); (E)-1,1-Diethoxy-3-methyl-2-butene
EINECS	217-111-4

Quality Control

Our 1 1-Diethoxy-3-Methyl-2-Butene 97 is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, HPLC, and NMR, to ensure it meets the specified 97% minimum purity and is free from critical impurities. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and safety parameters is provided with every shipment to guarantee traceability and compliance with your internal standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is moisture-sensitive; ensure containers are kept tightly sealed to prevent degradation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.415 - 1.425
Density (g/mL at 20°C)	0.85 - 0.87

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