furfurylthiol

The story

1. Latinfurfur
2. Akkadian𒎎𒋆𒁉𒍣𒁕 (guḫlum)
3. Aramaicכוחלא (kuḥlā)
4. Arabicكُحْل (kuḥl)
5. Andalusian Arabicكُحُول (kuḥūl)
6. Latinalcohol
7. Proto-Indo-European*de
8. Proto-Indo-European*déh₁
9. Proto-Italic*dē
10. Latindē
11. Latinde-
12. Proto-Indo-European*wed-
13. Proto-Indo-European*wódr̥
14. Proto-Hellenic*údōr
15. Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
16. Ancient Greekῠ̔δρο- (hŭdro-)
17. GermanAldehyd
18. Englishaldehydeclip.
19. Englishfurfural
20. Proto-Indo-European*swel-der.?
21. Ancient Greekῡ̔́λη (hū́lē)
22. Englishfurfuryl
23. Proto-Indo-European*dʰewh₂-der.?
24. Ancient Greekθέειον (théeion)
25. Ancient Greekθεῖον (theîon)
26. Englishthio-
27. Medieval Latinalcoho
28. Middle Englishalcofol
29. Englishalcohol
30. Englishthiol
31. English todayfurfurylthiol

From furfuryl + thiol.