Vitamins

Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids (most notably beta-carotene).

Phylloquinone, also Vitamin K1, is a polycyclic aromatic ketone, based on 2-methyl-1,4-naphthoquinone, with a 3-phytyl substituent.

Vitamin D refers to a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, iron, magnesium, phosphate, and zinc.

The term carotene (also carotin, from the Latin carota, "carrot") is used for many related unsaturated hydrocarbon substances having the formula C40Hx, which are synthesized by plants but in general cannot be made by animals (with the sole known exception of some aphids and spider mites which acquired the synthetic genes from fungi).

Nicotinamide, (/ˌnɪkəˈtɪnəmaɪd/) also known as niacinamide, NAA, and nicotinic amide, is the amide of nicotinic acid (vitamin B3 / niacin).

Menadione is an organic compound with the formula C6H4(CO)2C2H(CH3).

Dihydrofolic acid (conjugate base dihydrofolate) (DHF) is a folic acid (vitamin B9) derivative which is converted to tetrahydrofolic acid by dihydrofolate reductase.

Choline (/ˈkoʊlin/) is a water-soluble vitamin.

Cobamamide (AdoCbl), which is also known as adenosylcobalamin and dibencozide, is, along with methylcobalamin (MeCbl), one of the active forms of vitamin B12.

A vitamin is an organic compound and a vital nutrient that an organism requires in limited amounts.

Adenine /ˈædᵻnᵻn/ (A, Ade) is a nucleobase (a purine derivative).

Retinol (Vitamin A1) is one of the animal forms of vitamin A.

Orotic acid is a heterocyclic compound and an acid; it is also known as pyrimidinecarboxylic acid.

Retinyl palmitate, or vitamin A palmitate, is the ester of retinol (vitamin A) and palmitic acid, with formula C36H60O2.

Retinyl acetate (retinol acetate, vitamin A acetate) is a natural form of vitamin A which is the acetate ester of retinol.

Vitamin C and the Common Cold is a popular book by Linus Pauling, first published in 1970, on vitamin C, its interactions with common cold and the role of vitamin C megadosage in human health.

Vitamin Angels is a non-profit, non-governmental organization focused on bringing essential nutrition to children around the world through vitamin supplementation.

22-Dihydroergocalciferol is a form of vitamin D, also known as vitamin D4.

L-Alpha glycerylphosphorylcholine (alpha-GPC, choline alfoscerate) is a natural choline compound found in the brain.

Tocofersolan (INN) or tocophersolan is a synthetic water-soluble version of vitamin E.

Pantetheine is the cysteamine amide analog of pantothenic acid (vitamin B5).

Menadiol is an organic compound with the formula C6H4(COH)2(CH)(CH3).

Calcifediol (INN), also known as calcidiol, 25-hydroxycholecalciferol, or 25-hydroxyvitamin D (abbreviated 25(OH)D), is a prehormone that is produced in the liver by hydroxylation of vitamin D3 (cholecalciferol) by the enzyme cholecalciferol 25-hydroxylase which was isolated by Michael F.

Pantethine (bis-pantethine or co-enzyme pantethine) is a dimeric form of pantetheine, which is produced from pantothenic acid (vitamin B5) by the addition of cysteamine.

Trolox (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid) is a water-soluble analog of vitamin E sold by Hoffman-LaRoche.

Tocopheryl acetate, also known as vitamin E acetate, is a common vitamin supplement with the molecular formula C31H52O3 (for 'α' form).

β-Carotene is an organic, strongly colored red-orange pigment abundant in plants and fruits.

Pyridoxal is one form of vitamin B6.