| Description | Encecalin and demethylencecalin are major phytotoxic compounds isolated from Helianthella quinquenervis (Hook) A Gray (Asteraceae), they inhibit photosystem II (from water to 2,5-dibromo-3-methyl-6-isopropyl-1,4 p-benzo-quinone).They retard seed germination and reduce radicle and hypocotyl growth of weed and crop plant seedlings. |
| molecular weight | 232.28 |
| Molecular formula | C14H16O3 |
| CAS | 20628-09-5 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |