| Answer | Crossword Clue |
|---|---|
| ISOMER | Compound related to another |
| ISOMER | Compound similar to another |
| ISOMER | Related compound |
| HISTAMINE | Allergy-related compound |
| ISOMER | Chemically related compound |
| ISOMER | Compound resembling another |
| ISOMER | Chemical compound resembling another one |
| OXIDE | Compound containing the eighth element (yes, another chemistry clue) |
