Vitamin A helps your vision, immune system, reproduction, heart, lungs, kidneys, and other organs. It's scientific name is Retinol. It's boiling point is 421.2±14.0 °C at 760 mmHg. Vitamin A's density is 1.0±0.1 g/cm3. Vitamin A contains retinol, retinal, retinoic acid, and carotenoids. Vitamin A was discovered in 1947. Vitamin A’s chemical formula is C20H30O. There are 20 carbon atoms. There are 30 hydrogen atoms. There is 1 oxygen atom. Vitamin A is in carrots, beef liver, cod liver oil, sweet potatoes, black eyed peas, broccoli,sweet red peppers, mangos, cantoloupe, dried apricots, pumpkin, and tomaoe juice. Vitamin A retinoids are also good for helping acne. You can get Vitamin A deficiency from not having it. Some symptoms are dry skin, dry eyes, night blindness, delayed growth, chest infections, Acne breakouts, poor wound healing, and infertility.