| Product name： | Protopine |
| Synonym： | Fumarine; Corydalis C; Corydinine; Biflorine; Macleyine |
| Purity： | 98% + by HPLC |
| Analysis Method： | |
| Identification Method： | |
| Appearance： | Off-white powder |
| Chemical Family： | Alkaloids |
| Canonical SMILES： | CN1CCC2=CC3=C(C=C2C(=O)CC4=C(C1)C5=C(C=C4)OCO5)OCO3 |
| Botanical Source： | Corydalis yanhusuo W.T.Wang |