Which of the following is an inactivated Vitamin D?

Explanation

The correct answer is Ergocalciferol. Key Points Ergocalciferol is an inactivated Vitamin D Analog. Ergocalciferol is synthesized by some plants in the presence of UVB light . The production of ergocalciferol was prompted by the identification of dietary deficiency, more specifically vitamin D, as the main causative factor for the development of rickets . Ergocalciferol was isolated for the first time from yeast in 1931 and its structure was elucidated in 1932 . Ergocalciferol (Vitamin D2)-d6 , chemical formula ,C28H44O . Additional Information Tocopherol- Vitamin E (also known as tocopherol or alpha-tocopherol ). Vitamin activity was first identified in 1936 from a dietary fertility factor in rats. Thiamine , also known as vitamin B₁ . Thiamine helps to turn food into energy to keep the nervous system healthy . Ascorbic acid (vitamin C) is used to prevent or treat low levels of vitamin C in people who do not get enough of the vitamin from their diets. Vitamin C is a water-soluble vitamin found in citrus and other fruits and vegetables. 1930's , Albert Szent-Györgyi discovered the chemical ascorbic acid, also known as vitamin C.