Vitamin D2 is ergocalciferol and Vitamin D3 is cholecalciferol.
vitamin B9
The chemical name for vitamin K is phylloquinone. It also is referred to as phytomenadione or phytonadione. This vitamin is important in the body for blood coagulation.
tocopherol
It is the chemical name for the vitamin B12.
Retinon is the chemical name for vitamin A and it functions in the body is to promote good vision and to form and maintain healthy teeth, skeletal and soft tissue.
The chemical name for vitamin B6 is pyridoxine.
Pantothenic acid - C9H17NO5
The vitamin B3 is nicotinic acid (or more correct pyridine-3-carboxylic acid) with the chemical formula C6H5NO2.
Vitamin E is any of, or a mixture of, several different chemicals called tocopherols.
Ascorbic acid the chemical name of Vitamin C.
C19H19N7O6 C19H19N7O6
"Riboflavin", AKA vitamin B2, is C17H20N4O6.