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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.

| Pack Size | Price | Availability | Quantity |
|---|---|---|---|
| 5 mg | $400 | Backorder |
| 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 |
| Formula | C14H16O3 |
| Cas No. | 20628-09-5 |
| Relative Density. | 1.082g/cm3 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. |

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