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1,1-Dichloroethylene epoxide, also known as DCE epoxide is a compound belonging to the family of compounds known as orthocarboxylic acid derivatives. These are organic compounds containing the orhtocarboxylic acid functional group, with the RC(X)(X)X (R=H, alkyl,aryl; X=OH,alkoxy,aryloxy, (substituted amino), etc. (PMID: 16098521). Epoxides are compounds containing a cyclic ether with three ring atoms (one oxygen and two carbon atoms). DCE epoxide is a urinary metabolite of 1,1-Dichloroethene (DCE), or vinylidine chloride (PMID: 15319346, 11270662). DCE is mainly used as a comonomer in the production and polymerization of plastics such as polyvinyl chloride, acrylonitrile, and acrylates. As a result, DCE is widely distributed in the environment and in plastics. DCE was the precursor to the original form of saran-wrap or cling-wrap (clear plastic wrap used to preserve foods), but this has been phased out due to concerns over the carcinogenicity of DCE.

This compound belongs to the family of Enolates. These are salts of enols (or of the tautomeric aldehydes or ketones), in which the anionic charge is delocalized over oxygen and carbon, or similar covalent metal derivatives in which the metal is bound to oxygen.

Chloroacetyl chloride is a chlorinated acyl chloride. It is a bifunctional compound, making it a useful building block chemical. (Wikipedia)