| Answer | Crossword Clue |
|---|---|
| intramolecular | Existing or taking place within a molecule |
| intravenous | Existing or taking place within, or administered into, a vein or veins |
| intramolecular | existing or acting within the molecule |
| transmembrane | taking place or existing across a membrane |
| substituent | An atom or group of atoms taking the place of another atom or group or occupying a specified position in a molecule |
| substituents | An atom or group of atoms taking the place of another atom or group or occupying a specified position in a molecule |
