| Answer | Crossword Clue |
|---|---|
| acetyls | the radical CH3CO- of acetic acid often used in combination |
| acyls | a radical RCO- derived usually from an organic acid by removal of the hydroxyl from all acid groups often used in combination |
| acyl | a radical RCO- derived usually from an organic acid by removal of the hydroxyl from all acid groups often used in combination |
| diazo | relating to or containing the group N2 composed of two nitrogen atoms united to a single carbon atom of an organic radical often used in combination |
| phenyl | a monovalent aryl radical C6H5- derived from benzene by removal of one hydrogen atom often used in combination |
