Ergosterol |
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| Lumisterol; Pro-Vitamin D2; Provitamin D 2; D2, Pro-Vitamin; Pro Vitamin D2 | |
| A steroid of interest both because its biosynthesis in FUNGI is a target of ANTIFUNGAL AGENTS, notably AZOLES, and because when it is present in SKIN of animals, ULTRAVIOLET RAYS break a bond to result in ERGOCALCIFEROL. | |