Description

Carboxylic Acid tert-Butyl Ester CAS NO 908847-81-4 is a versatile chemical intermediate characterized by its tert-butyl ester protecting group, which offers enhanced stability and selectivity in synthetic pathways. This compound is particularly valuable for its role in facilitating complex organic syntheses where sensitive carboxylic acid functionalities must be preserved. It is essential for research and development laboratories, as well as production facilities in the pharmaceutical, agrochemical, and specialty chemical industries.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for protecting carboxylic acid groups during multi-step reactions.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Peptide Chemistry: Serves as a protecting group in solid-phase and solution-phase peptide synthesis to prevent unwanted side reactions.
• Material Science: Intermediate in the creation of specialized polymers, coatings, and liquid crystals.
• Organic Synthesis Research: A valuable reagent for academic and industrial R&D focused on novel reaction methodologies and complex molecule construction.
• Flavor & Fragrance Industry: Potential intermediate for synthesizing specific ester-based aroma compounds.

Basic Information

Product Name	Carboxylic Acid tert-Butyl Ester
CAS No.	908847-81-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	tert-Butyl carboxylate; Carboxylic acid tert-butyl ester; t-Butyl ester of carboxylic acid; Butyl ester, tert-; 908847-81-4; tert-Butoxycarbonyl derivative; Boc-protected carboxylic acid (context-dependent)
EINECS	Contact for details

Quality Control

Our Carboxylic Acid tert-Butyl Ester is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide Certificates of Analysis (COA) with detailed specifications for traceability and quality assurance, supporting compliance with cGMP and ISO standards where required.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and organic solvents. Recommended storage temperature is 2-8°C for long-term stability. Keep container tightly sealed when not in use to minimize moisture uptake and degradation.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Related Substances (HPLC)	Total impurities ≤2.0%
Loss on Drying	≤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.