| phenylhydrazine : 1-methylene-2-phenylhydrazine | 6228-40-6 | Ax-IMP1745 |
| Acetone phenylhydrazone | 103-02-6 | Ax-IMP1746 |
| 5-Deoxy-L-arabinose phenylhydrazone | 59245-36-2 | Ax-IMP1748 |
| 5-deoxy-2,3,4-O-triacetyl-L-arabinose-phenylhydrazone | 95895-36-6 | Ax-IMP1747 |
| L-biopterin Process Impurity | NA | Ax-IMP1750 |
| 1',2'-O-diacetyl-L-biopterin | 62933-57-7 | Ax-IMP1749 |
| 2,5,6-triaminopyrimidin-4-ol sulfate | 35011-47-3 | Ax-328 |
| Biopterin | 22150-76-1 | Ax-IMP1752 |
| Sapropetrin dihydrochloride | 69056-38-8 | Ax-IMP1753 |
| Pterine | 2236-60-4 | Ax-IMP1754 |