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Raltegravir (MK-0518) is a novel HIV-1 integrase strand transfer inhibitor with potent in vitro activity against wild-type and multi-class resistant HIV-1 virus (in vitro IC95 for HIV-1 in 50% normal human serum = 33 nM). Raltegravir induces viro-immunological improvement of nonhuman primates with progressing SIVmac251 infection. Raltegravir is administered orally every 12h and does not require boosting with low-dose ritonavir (RTV) to achieve therapeutic concentrations.
| Molecular Weight | 482.51 |
| Formula | C20H20FKN6O5 |
| CAS Number | 871038-72-1 |
| Solubility (25°C) | DMSO 10 mg/mL Water 20 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.
[1] Anton Pozniak, et al. Raltegravir in patients with tuberculosis
[3] Rosa de Miguel, et al. A safety evaluation of raltegravir for the treatment of HIV
[4] Emma D Deeks. Raltegravir Once-Daily Tablet: A Review in HIV-1 Infection
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Dolutegravir (GSK1349572) is a two-metal-binding HIV integrase inhibitor with IC50 of 2.7 nM, modest activity against raltegravir-resistant signature mutants Y143R, Q148K, N155H, and G140S/Q148H. |
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