Description

Ethyl 2-Chloro-2,2-difluoroacetate (CAS No. 383-62-0) is a high-purity fluorinated ester with the molecular formula C₄H₅ClF₂O₂. This specialized chemical is widely utilized in organic synthesis, pharmaceutical intermediates, and agrochemical applications due to its reactive difluoroacetate moiety. The compound is characterized by its clear, colorless to pale yellow liquid appearance and exhibits excellent solubility in common organic solvents. With a molecular weight of 158.53 g/mol, it offers precise reactivity for nucleophilic substitution and fluorination reactions. Strict quality control ensures ≥98% purity (GC), making it ideal for research and industrial processes requiring consistent performance. Store in a cool, dry place under inert conditions to maintain stability.

Properties

• CAS Number: 383-62-0
• Complexity: 115
• IUPAC Name: ethyl 2-chloro-2,2-difluoro-acetate
• InChI: InChI=1S/C4H5ClF2O2/c1-2-9-3(8)4(5,6)7/h2H2,1H3
• InChI Key: GVCAWQUJCHZRCB-UHFFFAOYSA-N
• Exact Mass: 157.9946134
• Molecular Formula: C4H5ClF2O2
• Molecular Weight: 158.53
• SMILES: CCOC(=O)C(F)(F)Cl
• Topological: 26.3
• Monoisotopic Mass: 157.9946134
• Synonyms: Ethyl chlorodifluoroacetate, 383-62-0, ethyl 2-chloro-2,2-difluoroacetate, Ethyl chlorodifluoroethanoate, Acetic acid, chlorodifluoro-, ethyl ester, EINECS 206-850-0, NSC 62664, Acetic acid, 2-chloro-2,2-difluoro-, ethyl ester, DTXSID7059935, GVCAWQUJCHZRCB-UHFFFAOYSA-, DTXCID1039472, 206-850-0, inchi=1/c4h5clf2o2/c1-2-9-3(8)4(5,6)7/h2h2,1h3, Chlorodifluoroacetic Acid Ethyl Ester, ethyl difluorochloroacetate, NSC-62664, Ethyl chlorodifluoroacetate;Ethyl 2-chloro-2,2-difluoroacetate, C4H5ClF2O2, ethyl chloro(difluoro)acetate, Acetic acid, chlorodifluoro-, ethyl ester (6CI,7CI,8CI,9CI); Chlorodifluoroacetic acid ethyl ester; Difluorochloroacetic acid ethyl ester; Ethyl 2-chloro-2,2-difluoroacetate; Ethyl chlorodifluoroacetate; NSC 62664, ethyl 2-chloro-2,2-difluoro-acetate, MFCD00013662, ethyl chlordifluoroacetate, T9UF4Y3QMS, SCHEMBL21023, ethyl chloro-(difluoro)acetate, Ethyl chlorodifluoroacetate, 98%, BCP24418, NSC62664, SBB087321, AKOS005063976, Chloro-difluoro-acetic acid ethyl ester, FE104674, LS-12977, DB-049272, NS00030373, EN300-20168, D78208, Acetic acid,2-chloro-2,2-difluoro-, ethyl ester

Application

Ethyl 2-Chloro-2,2-difluoroacetate serves as a key building block in the synthesis of fluorinated pharmaceuticals, including protease inhibitors and antiviral agents. Its reactive chloro- and difluoro-groups enable efficient incorporation of fluorine into complex molecules, enhancing metabolic stability. The compound is also employed in agrochemical production to develop herbicides with improved selectivity. Researchers value it for introducing difluoroacetate motifs in medicinal chemistry and material science applications.

Safety and Hazards

GHS Hazard Statements

• H225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]
• H314 (97.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
• H318 (85.1%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

Precautionary Statements

• P210, P233, P240, P241, P242, P243, P260, P264, P264+P265, P280, P301+P330+P331, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P321, P363, P370+P378, P403+P235, P405, and P501

Hazard Classes and Categories

• Flam. Liq. 2 (100%)
• Skin Corr. 1B (97.9%)
• Eye Dam. 1 (85.1%)

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