| Answer | Crossword Clue |
|---|---|
| benzyl | a monovalent radical C6H5CH2- derived from toluene |
| vinylic | a monovalent radical CH2=CH derived from ethylene by removal of one hydrogen atom |
| ethinyl | a monovalent unsaturated radical HC=C- derived from acetylene by removal of one hydrogen atom |
| phenyl | a monovalent aryl radical C6H5- derived from benzene by removal of one hydrogen atom often used in combination |
| tolyls | any of three monovalent radicals CH3C6H4 derived from toluene |
