Ethers are commonly used as solvents, and are used commonly in organic chemistry and biochemistry. The term "ether" used to mean diethyl ether, which was an anesthetic since banned due to its toxicity.
Ethers are composed of two carbon chains separated by an oxygen. They can be classified as either simple (symmetrical) or mixed (asymmetrical). If R and R' are the same then the ether is considered simple.
Ethers are named by joining the two name of the chains with an "oxy". The -yl suffix of the first chain is omitted.
(Smallest branch minus -yl)oxy(Parent chain)