Description

5-Methylisophthalaldehyde is a versatile aromatic dialdehyde compound with the CAS number 1805-67-0. This high-purity intermediate is valued for its dual aldehyde functionality, which makes it a critical building block in advanced organic synthesis. It is primarily sought after by research and development laboratories and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with complex polycyclic or heterocyclic structures.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators where its aromatic core provides stability and functionality.
• Ligand and Chelator Production: Serves as a starting material for synthesizing sophisticated ligands used in catalysis and metal complexation.
• Polymer and Resin Chemistry: Employed in the creation of specialty polymers, epoxy resins, and cross-linking agents due to its reactive aldehyde groups.
• Organic Electronic Materials: Investigated as a building block for organic semiconductors and light-emitting materials in OLED research.
• Fine Chemical and Flavor/Fragrance Intermediate: Utilized in the multi-step synthesis of complex fragrance molecules and other high-value fine chemicals.

Basic Information

Product Name	5-Methylisophthalaldehyde
CAS No.	1805-67-0
Molecular Formula	C9H8O2
Molecular Weight	148.16 g/mol
Synonyms	5-Methylbenzene-1,3-dicarbaldehyde; 1,3-Benzenedicarboxaldehyde, 5-methyl-; 5-Methyl-1,3-benzenedicarboxaldehyde; 3-Formyl-5-methylbenzaldehyde; Isophthalaldehyde, 5-methyl-; 5-Methylisophthalic dialdehyde
EINECS	Contact for details

Quality Control

Our 5-Methylisophthalaldehyde is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets the high standards required for research and industrial synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability and consistent quality.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This compound is easily oxidized and should be handled and stored under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from 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.