NONMANDATORY
\nˌɒnmˈandətəɹˌi], \nˌɒnmˈandətəɹˌi], \n_ˌɒ_n_m_ˈa_n_d_ə_t_ə_ɹ_ˌi]\
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.