Conjugated chromophores are found in many organic compounds including azo dyes ( also artificial food additives ) , compounds in fruits and vegetables ( lycopene and anthocyanidins ) , photoreceptors of the eye , and some pharmaceutical compounds such as the following :
Conjugated chromophores are found in many organic compounds including azo dyes ( also artificial food additives ) , compounds in fruits and vegetables ( lycopene and anthocyanidins ) .