- a yellow, crystalline substance, C13H10O, soluble in ether and slightly soluble in alcohol, used in organic synthesis and as a fungicide.
- a yellowish crystalline heterocyclic compound used as a fungicide; benzo-1,4-pyran. Its molecular structural unit is found in many dyes, such as rhodamine and fluorescein. Formula: CH 2 (C 6 H 4) 2 O
