A chemical compound composed of two ethyl groups connected by a sulfur atom (also called diethyl sulfide).
From ethyl (C2H5) + thio- (meaning containing sulfur, from Greek 'theion') + ethane. The systematic name describes the structure precisely.
Ethylthioethane smells absolutely terrible—like rotten eggs—because of the sulfur atom in the middle; this 'stink code' is actually useful since companies add thiols to odorless natural gas to warn people about dangerous leaks!
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