Description

5-Chloropentanal is a versatile bifunctional organic intermediate featuring both a reactive aldehyde group and a chlorinated alkyl chain. This compound is valued for its role as a key building block in the synthesis of more complex molecules, particularly in pharmaceutical and fine chemical manufacturing. Industries such as agrochemicals, polymer science, and fragrance development utilize this aldehyde for constructing heterocycles, functionalized polymers, and specialty additives.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds containing piperidine or pyrrolidine rings.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators that require a chlorinated aldehyde moiety.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for specialty polymers, coatings, and resins.
• Fine Chemical Building Block: Employed in organic synthesis for chain extension, cyclization reactions, and the preparation of heterocyclic compounds.
• Fragrance & Flavor Chemistry: Acts as a starting material for synthesizing specific aroma chemicals and flavoring agents.
• Research & Development: Used in academic and industrial R&D labs for method development and exploring new synthetic pathways.

Basic Information

Product Name	5-Chloropentanal
CAS No.	20074-80-0
Molecular Formula	C5H9ClO
Molecular Weight	120.58 g/mol
Synonyms	5-Chlorovaleraldehyde; 5-Chloropentanaldehyde; 4-Chlorobutyl aldehyde; Pentanal, 5-chloro-; 5-Chloro-1-pentanal; 5-Chloropentanal (20074-80-0); ω-Chlorovaleraldehyde; 5-Chloropentane-1-al
EINECS	243-518-5

Quality Control

Our 5-Chloropentanal is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay by GC or HPLC, identification by FT-IR, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 2°C and 8°C (refrigerated) to minimize degradation. This product is easily oxidized; for long-term storage, consider maintaining under an inert atmosphere such as nitrogen. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC)	Total impurities ≤ 3.0%
Specific Gravity (20°C)	1.080 - 1.120
Refractive Index (20°C)	1.440 - 1.450

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