Description

[4-(Ethoxycarbonyl)Butyl]Triphenylphosphonium Bromide CAS NO 118026-77-0 is a high-purity, organophosphorus salt widely used as a key reagent in advanced organic synthesis. Its primary value lies in its role as a stabilized ylide precursor for Wittig olefination reactions, enabling the efficient construction of carbon-carbon double bonds. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing complex molecules and fine chemicals.

Application

• Wittig Reaction Reagent: A crucial precursor for generating stabilized ylides to synthesize α,β-unsaturated esters and other olefins with high stereoselectivity.
• Pharmaceutical Intermediate Synthesis: Used in the construction of key molecular scaffolds for active pharmaceutical ingredients (APIs), including those with conjugated systems.
• Agrochemical Manufacturing: Employed in the synthesis of complex intermediates for herbicides, fungicides, and plant growth regulators.
• Material Science Research: Serves as a building block in the development of organic semiconductors, liquid crystals, and advanced polymers.
• Fine Chemical Production: Facilitates the synthesis of specialty esters, flavors, fragrances, and other value-added chemicals.
• Academic & Process R&D: A valuable tool for methodological development and scaling novel synthetic routes in laboratory and pilot plant settings.

Basic Information

Product Name	[4-(Ethoxycarbonyl)Butyl]Triphenylphosphonium Bromide
CAS No.	118026-77-0
Molecular Formula	C27H32BrO2P
Molecular Weight	499.42 g/mol
Synonyms	(4-Ethoxycarbonylbutyl)triphenylphosphonium bromide; 4-(Ethoxycarbonyl)butyltriphenylphosphonium bromide; Ethyl 5-(triphenylphosphonio)pentanoate bromide; 5-(Triphenylphosphonio)pentanoic acid ethyl ester bromide; Wittig reagent precursor; Phosphonium salt reagent; ETPB
EINECS	Contact for details

Quality Control

Our [4-(Ethoxycarbonyl)Butyl]Triphenylphosphonium Bromide is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR for structural confirmation, and KF titration for moisture content, to ensure it meets the stringent requirements for synthetic applications. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Melting Point	Contact for details
Residue on Ignition	≤ 0.1%

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