Carotin is a compound found in many plants, including carrots and sweet potatoes, that is responsible for their orange or yellow color. Sometimes spelled "carotene," this pigment is also an important precursor for vitamin A. Synonyms for carotin include provitamin A, beta-carotene, and alpha-carotene. These compounds are all similar in chemical structure to carotin and also have the ability to convert to vitamin A in the body. Other synonyms for carotin include xanthophylls, lycopene, and zeaxanthin, which are also plant pigments that contribute to coloration in fruits and vegetables. Overall, these compounds are important for maintaining good health and should be included in a balanced diet.