Description

Butanoic Acid, 2-(Hydroxymethylene)-3-Oxo-, Methyl Ester (9Ci) is a specialized organic ester compound with the CAS number 131607-55-1. This chemical serves as a versatile building block and intermediate in advanced organic synthesis, valued for its reactive hydroxymethylene and keto ester functionalities. It is primarily required by R&D laboratories and production facilities in the pharmaceutical, agrochemical, and fine chemical sectors for developing active ingredients and complex molecules.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Fine Chemical Production: Acts as a precursor for dyes, pigments, and performance chemicals.
• Organic Research & Development: Employed in academic and industrial R&D for exploring new synthetic pathways and methodologies.
• Flavor and Fragrance Industry: Potential intermediate for synthesizing specific aroma compounds.
• Polymer Chemistry: Can be utilized as a monomer or modifying agent for specialty polymers.

Basic Information

Product Name	Butanoic Acid, 2-(Hydroxymethylene)-3-Oxo-, Methyl Ester (9Ci)
CAS No.	131607-55-1
Molecular Formula	C6H8O4
Molecular Weight	144.13 g/mol
Synonyms	Methyl 2-(hydroxymethylene)-3-oxobutanoate; Methyl 2-formyl-3-oxobutanoate; 2-(Hydroxymethylene)-3-oxobutanoic acid methyl ester; 3-Oxobutanoic acid, 2-(hydroxymethylene)-, methyl ester; Butanoic acid, 2-(hydroxymethylene)-3-oxo-, methyl ester (9CI)
EINECS	Contact for details

Quality Control

Our Butanoic Acid, 2-(Hydroxymethylene)-3-Oxo-, Methyl Ester (9Ci) is produced under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) are provided with each shipment, detailing all relevant specifications. We adhere to cGMP guidelines where applicable to meet the stringent requirements of our global clientele in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed and away from moisture and direct light exposure to maintain stability and purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%

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