| Primary (First) - leek |
| FL | | leek oil |
| | odor: sulfurous alliaceous onion |
| | flavor: sulfurous alliaceous leek |
| Secondary (Second) - leek |
| Tertiary (Third) - leek |
| FL | | prenyl mercaptan |
| | odor: sulfurous smoke leek onion skunky |
| Quaternary (Fourth) - leek |
| FL | | methyl propyl sulfide |
| | odor: alliaceous creamy green leek |
| FL | 2,4,6- | triethyl tetrahydro-1,3,5-dithiazine |
| | odor: alliaceous roasted fried onion leek fatty scallion |
| | flavor: savory meaty |
| Quinary (Fifth) - leek |
| Senary (Sixth) - leek |
| FL | | peanut dithiazine |
| | odor: peanut meaty cocoa |
| Septenary (Seventh) - leek |
| Octonary (Eighth) - leek |