Furan 2-mercaptomethyl

Mercaptomethyl)furan (2-Furylmethanethiol, Furfuryl mercaptan) ch2sh... 

Ethanol 2-(2-Thienyl)- XIII/1, 512 Furan 5-Mercaptomethyl-2-methyl-E11.49 (H-CH2-SH) 1,4-Oxathiine 3,5-Dimethyl- E9a, 43 (—2HC - Dien)... 

The most obvious property of a low-molecular-weight thiol is its foul odor. Ethanethiol is added to natural gas so that leaks can be detected without special equipment—your nose is so sensitive that it can detect less than one part of ethanethiol in 10,000,000,000 parts of air The odor of thiols weakens with the number of carbons, because both the volatility and the sulfur content decrease. 1-Dodecanethiol, for example, has only a faint odor. On the positive side, of the hundreds of substances that contribute to the aroma of freshly brewed coffee, the one most responsible for its characteristic odor is the thiol 2-(mercaptomethyl)furan. Likewise, the contribution of p-l-menthene-S-thiol to the taste and odor of freshly squeezed grapefruit juice far exceeds that of most of the more than 260 other volatile components so far identified. 

---