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Furafylline is a selective inhibitor of cytochrome P450IA2 (IC50 = 2.4 μM) and PDE (phosphodiesterase). Furafylline is a methyl xanthine derivative with an expanded duration of action in vivo than that of theophylline. Inhibition of CYP has the effect of slowing oxidative metabolism of xenobiotics, while inhibition of PDE prevents the hydrolysis of secondary messenger molecules, which in turn prolongs signal transduction and enhances its effects.
| 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 resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 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 resveratrol of 11.2 mg/kg.
| Molecular Weight | 260.25 |
| Formula | C12H12N4O3 |
| CAS Number | 80288-49-9 |
| Purity | >98% |
| Solubility | DMSO >10 mg/mL |
| Storage | at -20°C |
Characterization of chicken cytochrome P450 1A4 and 1A5: inter-paralog comparisons of substrate preference and inhibitor selectivity.
Yang J,et.al. Comp Biochem Physiol C Toxicol Pharmacol. 2013 May;337-43. PMID: 23474502.
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