ULSTER CUSTOM
\ˈʌlstə kˈʌstəm], \ˈʌlstə kˈʌstəm], \ˈʌ_l_s_t_ə k_ˈʌ_s_t_ə_m]\
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.