Silydianin, the active ingredient of silythistle, has anti-collagenase and anti-elastic enzyme activities. Silydianin is a natural protein tyrosine phosphatase 1B (PTP1B) inhibitor with an IC50 value of 17.38 μM. Silydianin inhibited the production and release of oxidation products in vitro.
| Molecular Weight | 482.44 |
| Formula | C25H22O10 |
| CAS Number | 29782-68-1 |
| Solubility (25°C) | DMSO ≥ 60 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
[3] No authors listed. Milk Thistle
[4] Ludovico Abenavoli, et al. Milk thistle in liver diseases: past, present, future
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| DPM-1003
DPM-1003 is an orally potent, specific inhibitor of PTP1B. |
| D-3
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| EGF Receptor Substrate 2 (Phospho-Tyr5)
EGF Receptor Substrate 2 (Phospho-Tyr5) acetate, a biologically active peptide, is a tyrosine phosphate substrate. |
| Calcineurin autoinhibitory peptide
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