The table shows four compounds that contribute to the aroma of spices - Scottish Highers Chemistry - Question 10 - 2019

In this question, we need to identify which one of the four compounds listed is not derived from a terpene.

• Identify terpenes: Terpenes are a large class of organic compounds produced primarily by plants, particularly conifers. They typically consist of multiple isoprene units and have a variety of structures, though they usually contain more carbon atoms than compounds derived from them.
• Analyze the compounds:
  • Compound A: C10H16O - This compound is likely derived from a terpene as it has the characteristic structure of terpenes.
  • Compound B: C10H20O - Similar to A, this compound also fits the profile of a terpene.
  • Compound C: C10H18O - This compound also appears to be related to terpenes.
  • Compound D: C8H10O - This has fewer carbons than the other compounds and does not fit the typical structure of a terpene.

Based on this analysis, compound D is identified as the one not derived from a terpene.