Description

1,2-Benzenedicarboxylic Acid 1-Ethyl 2-Trimethylsilyl Ester is a specialized organosilicon derivative of phthalic acid, serving as a key protected intermediate and silylating agent in advanced organic synthesis. Its value lies in providing precise control over reactivity and selectivity, enabling the synthesis of complex molecules where traditional ester protection strategies are insufficient. This compound is essential for research and production chemists in the pharmaceutical, agrochemical, and advanced materials sectors, particularly for constructing sensitive active pharmaceutical ingredients (APIs) and functional polymers.

Application

• Pharmaceutical Intermediate: Critical for the multi-step synthesis of complex drug molecules, protecting carboxylic acid groups during sensitive reactions.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators requiring selective protection/deprotection steps.
• Polymer & Material Science: Acts as a monomer or modifying agent in the synthesis of specialty polyesters, silicones, and other performance polymers.
• Organic Synthesis Reagent: Functions as a versatile silylating agent and protecting group for carboxylic acids in academic and industrial R&D laboratories.
• Flavor & Fragrance Industry: Employed in the synthesis of ester-based aroma chemicals where specific, controlled esterification is required.
• Liquid Crystal & Electronic Chemicals: Used as a building block for creating organic semiconductors and liquid crystal display (LCD) materials.

Basic Information

Product Name	1,2-Benzenedicarboxylic Acid 1-Ethyl 2-Trimethylsilyl Ester
CAS No.	55530-57-9
Molecular Formula	C13H18O4Si
Molecular Weight	266.36 g/mol
Synonyms	Phthalic Acid 1-Ethyl 2-Trimethylsilyl Ester; Ethyl Trimethylsilyl Phthalate; 1-Ethyl 2-Trimethylsilyl Phthalate; 1,2-Benzenedicarboxylic Acid Ethyl Trimethylsilyl Ester; Ethyl (Trimethylsilyl) Phthalate; O-Ethyl O'-Trimethylsilyl Phthalate; Phthalic Acid Ethyl Trimethylsilyl Diester; CAS 55530-57-9
EINECS	Contact for details

Quality Control

Our production of 1,2-Benzenedicarboxylic Acid 1-Ethyl 2-Trimethylsilyl Ester adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and Karl Fischer titration, to ensure high purity and batch-to-batch consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting identity, purity, and impurity profiles. We operate under a quality system that supports compliance with cGMP and ISO standards for research and industrial use.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can compromise product integrity. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Density (at 20°C)	~1.05 g/cm³

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