| BERBERINE |
Duke, 1992 * |
| CODEINE |
Lawrence Review of Natural Products, Dec-90. |
| CORYDINE |
Iwu, M.M. 1993. Handbook of African Medicinal Plants. CRC Press, Boca Raton, FL 435 pp. |
| FUMARINE |
Duke, 1992 * |
| ISOCORYDINE |
Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| MORPHINE |
Lawrence Review of Natural Products, Dec-90. |
| PROTOPINE |
Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |