| Components | Bark content (%, w/w) |
| Saponins | 3.6 ± 0.5 |
| Tannins | 5.0 ± 0.5 |
| Alkaloids | ± |
| Flavonoids | + |
| Quinones | − |
| Terpenes sterols | − |
| Water content | 86.1 ± 2.1 |
| Insoluble arches in water | 16.8 ± 1.0 |
| Soluble arches in water | 32.3 ± 5.2 |
| Soluble arches in HCl 20% | 66.0 ± 4.7 |