Description

Benzyl 3-Oxopentanoate is a versatile organic ester compound with the CAS registry number 4949-45-5. This chemical serves as a valuable intermediate and building block in advanced organic synthesis, prized for its reactive β-ketoester functionality. It is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty fragrance sectors for developing active ingredients and complex molecules.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those requiring β-ketoester motifs for further cyclization or functionalization.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where its structure acts as a core component for bioactive molecules.
• Fine Chemical Production: Employed as a building block for synthesizing complex organic compounds, including dyes, pigments, and specialty polymers.
• Flavor and Fragrance Ingredient: Acts as an intermediate in the creation of specific ester-based aroma compounds for high-end perfumery and flavor formulations.
• Organic Research & Development: A valuable reagent in academic and industrial R&D labs for methodologies like Claisen condensations and the synthesis of heterocyclic compounds.

Basic Information

Product Name	Benzyl 3-Oxopentanoate
CAS No.	4949-45-5
Molecular Formula	C12H14O3
Molecular Weight	206.24 g/mol
Synonyms	Benzyl acetoacetate; Benzyl acetylacetate; 3-Oxopentanoic acid benzyl ester; Benzyl β-ketovalerate; Pentanoic acid, 3-oxo-, phenylmethyl ester; Benzyl levulinate (related); Acetoacetic acid benzyl ester
EINECS	225-586-6

Quality Control

Our Benzyl 3-Oxopentanoate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including assay by GC/HPLC, identity confirmation (IR, NMR), and impurity profiling to ensure high purity and consistency. A Certificate of Analysis (COA) detailing all specifications and test results is provided with every shipment to guarantee compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. For long-term storage, consider using an inert atmosphere to preserve optimal quality.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.508 - 1.512
Density (20°C)	1.08 - 1.12 g/cm³

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