Description

1(3H)-Isobenzofuranone,3-Methyl-,(3S)-(9Ci) CAS NO 3205-17-2 is a specific stereoisomer of a substituted isobenzofuranone, a valuable chiral building block in fine chemical synthesis. This compound matters for its role in creating optically active intermediates, which are critical for developing pharmaceuticals and advanced materials with high stereochemical purity. It is needed by research and development chemists, process development scientists, and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries.

Application

• Pharmaceutical Intermediate: Serves as a key chiral synthon in the synthesis of active pharmaceutical ingredients (APIs), particularly for central nervous system (CNS) and cardiovascular drugs.
• Agrochemical Synthesis: Used in the research and production of chiral pesticides and herbicides, where specific stereochemistry can enhance efficacy and reduce environmental impact.
• Ligand and Catalyst Development: Acts as a precursor for synthesizing novel chiral ligands and organocatalysts used in asymmetric synthesis.
• Material Science Research: Employed in the development of chiral polymers and liquid crystals with specific optical properties.
• Academic and Industrial R&D: A crucial reagent for methodological studies in organic chemistry and for exploring new synthetic pathways.
• Flavor and Fragrance Industry: Potential use in the synthesis of complex, stereochemically-defined aroma chemicals.

Basic Information

Product Name	1(3H)-Isobenzofuranone,3-Methyl-,(3S)-(9Ci)
CAS No.	3205-17-2
Molecular Formula	C9H8O2
Molecular Weight	148.16 g/mol
Synonyms	(3S)-3-Methylphthalide; (S)-3-Methylphthalide; (S)-3-Methyl-1(3H)-isobenzofuranone; 3-Methylphthalide, (S)-; (-)-(S)-3-Methylphthalide; Phthalide, 3-methyl-, (S)-; (3S)-3-Methyl-1(3H)-isobenzofuranone; 3-Methyl-1(3H)-isobenzofuranone, (3S)-
EINECS	Contact for details

Quality Control

Our 1(3H)-Isobenzofuranone,3-Methyl-,(3S)-(9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure it meets the high standards required for advanced synthetic applications. Certificates of Analysis (COA) detailing identity, purity, enantiomeric excess, and impurity profiles are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
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.