PRECIOUS STONE
\pɹˈɛʃəs stˈə͡ʊn], \pɹˈɛʃəs stˈəʊn], \p_ɹ_ˈɛ_ʃ_ə_s s_t_ˈəʊ_n]\
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.