| Clue | Source | Date |
|---|---|---|
| Hydrocarbon with single bonds | ||
| Saturated hydrocarbon | Wall Street Journal | 23 Nov 2024 |
| Certain hydrocarbon | New York Times | 08 Jan 2021 |
| Fuel compound | Universal | 29 Jul 2019 |
| Open-chain hydrocarbon | The Washington Post Sunday | 03 Mar 2019 |
| Fuel compound | ||
| Saturated hydrocarbon | ||
| Basic hydrocarbon | ||
| Paraffin | ||
| C3H8, e.g. | ||
| Saturated hydrocarbon | ||
| Certain saturated hydrocarbon | ||
| Fuel hydrocarbon | ||
| Basic hydrocarbon | ||
| Methane <P>e.g. | ||
| Saturated hydrocarbon |