Description

4,7,10,13,16,19,22-Heptaoxapentacosanedioic Acid, 1-(1,1-Dimethylethyl) Ester is a specialized polyether-based carboxylic acid derivative, valued for its unique combination of a hydrophobic tert-butyl ester group and a hydrophilic poly(ethylene glycol) chain. This bifunctional structure makes it a versatile intermediate for modifying the solubility and biocompatibility of target molecules. It is primarily sought after by research and development teams in the pharmaceutical and advanced materials sectors for applications in drug delivery systems, polymer synthesis, and surface modification.

Application

• Pharmaceutical Intermediate: Used in the synthesis of prodrugs and bioconjugates to enhance water solubility and bioavailability of active pharmaceutical ingredients (APIs).
• Polymer Chemistry: Serves as a functional monomer or chain transfer agent for creating amphiphilic block copolymers and PEGylated materials.
• Surface Engineering: Applied in the development of non-fouling coatings and hydrogels for medical devices and biosensors.
• Linker Chemistry: Acts as a cleavable or stable linker in the construction of antibody-drug conjugates (ADCs) and other targeted therapeutics.
• Material Science: Utilized to impart hydrophilic character and improve dispersion properties in nanocomposites and specialty resins.
• Research & Development: A key building block in academic and industrial R&D for exploring new macromolecular architectures and delivery platforms.

Basic Information

Product Name	4,7,10,13,16,19,22-Heptaoxapentacosanedioic Acid, 1-(1,1-Dimethylethyl) Ester
CAS No.	2134235-86-0
Molecular Formula	C25H48O11
Molecular Weight	524.65 g/mol
Synonyms	tert-Butyl PEG7 acid; 1-(tert-Butyl) 25-hydrogen 4,7,10,13,16,19,22-heptaoxapentacosanedioate; α-tert-Butyl-ω-carboxy hepta(ethylene glycol); TB-PEG7-COOH; Heptaethylene glycol mono-tert-butyl ether carboxylic acid; 2-[2-[2-[2-[2-[2-[2-(2-tert-Butoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]acetic acid; PEG7-t-butyl ester acid
EINECS	Contact for details

Quality Control

Our production of 4,7,10,13,16,19,22-Heptaoxapentacosanedioic Acid, 1-(1,1-Dimethylethyl) Ester adheres to stringent quality management protocols. Each batch is characterized and tested to ensure identity, purity, and consistency, meeting the exacting standards required for research and pharmaceutical applications. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay, impurity profile, and spectral data is provided with every shipment.

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). The product is hygroscopic (moisture-sensitive); keep the container tightly sealed under an inert atmosphere to maintain stability and prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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