Description

m-Peg7-T-Butyl Ester CAS NO 874208-90-9 is a high-purity, functionalized polyethylene glycol derivative featuring a terminal tert-butyl ester group. This compound is a critical intermediate for the synthesis of advanced pharmaceutical ingredients and sophisticated polymer conjugates, offering precise control over solubility and reactivity. It is primarily utilized by researchers and manufacturers in the pharmaceutical, biotechnology, and specialty chemical sectors for drug delivery system development and bioconjugation applications.

Application

• Pharmaceutical Intermediate: A key building block for the synthesis of prodrugs and active pharmaceutical ingredients (APIs) requiring PEGylation.
• Bioconjugation Linker: Used to attach therapeutic molecules (e.g., peptides, proteins, antibodies) to carriers or surfaces, enhancing stability and pharmacokinetics.
• Polymer Chemistry: Serves as a functional monomer or initiator in the synthesis of tailored, biodegradable, and stimuli-responsive polymers.
• Drug Delivery Systems: Incorporated into the design of micelles, liposomes, and nanoparticles to improve drug solubility, targeting, and controlled release.
• Surface Modification: Employed to create hydrophilic, non-fouling coatings on medical devices and diagnostic tools.
• Research & Development: A valuable tool in academic and industrial R&D for exploring new chemical entities and material properties.

Basic Information

Product Name	m-Peg7-T-Butyl Ester
CAS No.	874208-90-9
Molecular Formula	C23H46O9
Molecular Weight	466.61 g/mol
Synonyms	1-(tert-Butoxy)-3,6,9,12,15,18,21-heptaoxatritriacontan-33-oic acid; α-Methyl-ω-(tert-butoxycarbonyl)hepta(ethylene glycol); mPEG7-t-butyl ester; tert-Butyl mPEG7 ester; Heptaethylene glycol monomethyl ether tert-butyl ester; 2-[2-[2-[2-[2-[2-[2-(2-Methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]acetic acid tert-butyl ester; PEG7 methyl ether t-butyl ester; mPEG7-Boc
EINECS	Contact for details

Quality Control

Our m-Peg7-T-Butyl Ester is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and consistent performance suitable for sensitive applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This product is hygroscopic (moisture-sensitive). For long-term storage under inert atmosphere (e.g., nitrogen or argon) is recommended to maintain optimal quality.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 1.0%

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