α-Carotene is a form of carotene with a β-ring at one end and an ε-ring at the other. It is the second most common form of carotene.
| Vitamins (A11) | | | Fat soluble | | | | | | | D2 ( Ergosterol, Ergocalciferol) · D3 ( 7-Dehydrocholesterol, Previtamin D3, Cholecalciferol, 25-hydroxycholecalciferol, Calcitriol ( 1,25-dihydroxycholecalciferol), Calcitroic acid) D4 ( Dihydroergocalciferol) · D5 · D analogues ( Dihydrotachysterol, Calcipotriol, Tacalcitol, Paricalcitol) | | | | | | | | | | | | Water soluble | | | B1 (Thiamine) · B2 (Riboflavin) · B3 (Niacin, Nicotinamide) · B5 (Pantothenic acid, Dexpanthenol, Pantethine) · B6 (Pyridoxine, Pyridoxal phosphate, Pyridoxamine)
B7 (Biotin) · B9 (Folic acid, Dihydrofolic acid, Folinic acid) · B12 (Cyanocobalamin, Hydroxocobalamin, Methylcobalamin, Cobamamide) · Choline | | | | | | | | | |