Ethylchlorate

Ethylchlorate was a substance.

In 2151, traces of ethylchlorate were detected in the Arachnid Nebula by Sub-Commander T'Pol, while analyzing the nebula aboard the Vahklas, a Vulcan civilian transport ship. (ENT: "Fusion")

It is unclear if this compound is intended to be the same as ethyl chlorate (C2H5Cl).