| Compound | Description |
|---|---|
| hydronium ion | |
| uridine diphosphate | A uracil nucleotide containing a pyrophosphate group esterified to C5 of the sugar moiety. |
| Coenzyme A | |
| Malonyl Coenzyme A | A coenzyme A derivative which plays a key role in the fatty acid synthesis in the cytoplasmic and microsomal systems. |