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23-11-2017
Chemistry

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What catalyst converts 7-dehydrocholesterol to provitamin d3?

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02-12-2017

Ultra violet light is the catalyst that converts 7-dehydrocholesterol to provitamin D3. Ultra violet light can be obtained from the sun. The conversion happens when UVB light hits the skin (where 7-dehydrocholesterol naturally resides), gets absorbed, and us metabolized inside of the body.

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