Description

1,3-Isobenzofurandione,5-(Trimethylsilyl)-(9Ci) is a specialized organosilicon derivative of phthalic anhydride, identified by CAS NO 18019-71-1. This compound is valued for its role as a versatile synthetic intermediate and protecting group reagent in advanced organic synthesis. It is primarily sought by research and development teams in the pharmaceutical, agrochemical, and advanced materials sectors for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly for introducing or protecting functional groups.
• Agrochemical Synthesis: Serves as a key building block in the development of novel herbicides, fungicides, and plant growth regulators.
• Material Science Research: Employed in the creation of silicon-containing polymers, resins, and advanced organic electronic materials.
• Organic Synthesis Reagent: Acts as a silylating agent or a protected anhydride moiety in multi-step synthetic routes.
• Chemical Research & Development: Utilized in academic and industrial R&D for methodology development and exploring new chemical entities.

Basic Information

Product Name	1,3-Isobenzofurandione,5-(Trimethylsilyl)-(9Ci)
CAS No.	18019-71-1
Molecular Formula	C11H12O3Si
Molecular Weight	220.30 g/mol
Synonyms	5-(Trimethylsilyl)phthalic anhydride; 5-(Trimethylsilyl)isobenzofuran-1,3-dione; 5-Trimethylsilylphthalic anhydride; 1,3-Dioxo-5-(trimethylsilyl)-1,3-dihydro-2-benzofuran; Trimethylsilylphthalic anhydride; 5-TMS-phthalic anhydride; 5-Trimethylsilyl-1,3-isobenzofurandione
EINECS	Contact for details

Quality Control

Our 1,3-Isobenzofurandione,5-(Trimethylsilyl)-(9Ci) is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles. We support custom synthesis and can tailor specifications to meet specific research or project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area. The container should be kept tightly sealed in a dry environment to minimize exposure to moisture. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
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.