Ethyl Oxalyl Monochloride

CAS NO. 4755-77-5

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Product Description

Product Name	Ethyl Oxalyl Monochloride (Synonyms: Ethyl chlorooxoacetate; Ethyl (chloroformyl)formate)
CAS NO.	4755-77-5
Formula & Weight	C4H5ClO3 (MW: 136.53)
Chemical Structure
Technical Specifications	Appearance: Colorless transparent liquid Purity (GC): ≥ 98.0% Boiling Point: 135°C Density: 1.22 g/mL at 25°C Solubility: Miscible with organic solvents; reacts with water.
Key Applications	Intermediate for high-value synthesis: Pharma Synthesis: Key acylating agent for antibiotics (e.g., Cefazolin, Cefamandole) and other APIs. Agrochemicals: Critical building block for high-efficiency herbicides and crop protection agents. Organic Synthesis: Efficient reagent for introducing chlorocarbonyl groups.
Handling & Storage	Storage: Moisture sensitive. Store under inert gas in a cool, dry place. Safety: Corrosive. Handle with appropriate PPE. Refer to MSDS before use.

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