| Compound | Description |
|---|---|
| hydronium ion | |
| Oxygen | An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration. |
| 3,7,12-trihydroxycoprostane | intermediate in bile acid synthesis in liver; enhances rate of porphyrin synthesis in cultured liver cells by induction of delta-aminolevulinic acid synthetase; RN given refers to (3alpha,5beta,7alpha,12alpha)-isomer; structure |