| Compound | Description |
|---|---|
| Orthophosphate | |
| cholecalciferol | Derivative of 7-dehydroxycholesterol formed by ULTRAVIOLET RAYS breaking of the C9-C10 bond. It differs from ERGOCALCIFEROL in having a single bond between C22 and C23 and lacking a methyl group at C24. |
| Sodium | A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23. |