This compound can be formed by reacting 7-dehydrocholestrol with two hundred ninety six nanometer wavelength light, so high levels of melanin slow its synthesis.
One form of this compound is produced in fungi from ergosterol, while furry mammals ingest this compound orally when grooming themselves. Aold Windaus received his Nobel for work on the synthesis of this vitamin. In the liver this vitamin is converted to its active form of calcitriol, after which it prevents diseases like rickets by promoting calcium absorption. This compound can be formed by reacting 7-dehydrocholestrol with two hundred ninety six nanometer wavelength light, so high levels of melanin slow its synthesis. For 10 points, name this vitamin the human body can synthesize itself when exposed to sunshine.
One form of this compound is produced in fungi from ergosterol, while furry mammals ingest this compound orally when grooming themselves.
Vitamin {D} or calciferol [accept "calcidiol" or "calcitriol" before mention]