Description

1(2H)-Isoquinolinone, 3,4-Dihydro-5-Methyl- is a heterocyclic organic compound that serves as a versatile and valuable synthetic intermediate in advanced chemical manufacturing. Its unique isoquinolinone core structure makes it a critical building block for the development of complex molecules, particularly in the pharmaceutical and agrochemical sectors. This compound is essential for researchers and production chemists engaged in the synthesis of active pharmaceutical ingredients (APIs), fine chemicals, and functional materials. The CAS number for this product is 129075-56-5.

Application

The primary utility of 1(2H)-Isoquinolinone, 3,4-Dihydro-5-Methyl- lies in its role as a key synthetic precursor. Its applications are diverse and critical to several high-value industries:

• Pharmaceutical Intermediates: Core building block for the synthesis of novel drug candidates, particularly those targeting neurological and anti-inflammatory pathways.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and plant growth regulators.
• Material Science: Serves as a monomer or functional unit in the creation of specialty polymers, dyes, and organic electronic materials.
• Academic & Industrial R&D: A fundamental reagent in medicinal chemistry and organic synthesis laboratories for method development and library synthesis.
• Fine Chemical Production: Employed in the multi-step synthesis of complex, high-purity specialty chemicals for various industrial applications.

Basic Information

Product Name	1(2H)-Isoquinolinone, 3,4-Dihydro-5-Methyl-
CAS No.	129075-56-5
Molecular Formula	C10H11NO
Molecular Weight	161.20 g/mol
Synonyms	5-Methyl-3,4-dihydro-1(2H)-isoquinolinone; 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one; 3,4-Dihydro-5-methyl-1(2H)-isoquinolinone; 5-Methyl-1,2,3,4-tetrahydroisoquinolin-1-one; 1,2,3,4-Tetrahydro-5-methylisoquinolin-1-one; 5-Methyl-1-oxo-1,2,3,4-tetrahydroisoquinoline
EINECS	Contact for details

Quality Control

We maintain a rigorous quality management system to ensure batch-to-batch consistency and high purity. Our products undergo comprehensive analytical testing, including HPLC, GC, and NMR, to verify identity and purity against established specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment and is available upon request to support your quality assurance and regulatory compliance needs.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.