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Cat. No. M1971
Maraviroc Structure

Selzentry, Celsentri, UK-427857

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10mg USD 90 In stock
25mg USD 200 In stock
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Biological Activity

Maraviroc is an antiretroviral compound in the CCR5 receptor antagonist class used in the treatment of HIV infection. It is also classed as an entry inhibitor. Maraviroc is extensively metabolized by CYP3A4, with renal clearance accounting for approximately 23% of total clearance. Maraviroc is an entry inhibitor. Specifically, maraviroc is a negative allosteric modulator of the CCR5 receptor, which is found on the surface of certain human cells. Maraviroc (UK-427857) inhibits CCL3 (MIP-1α) binding to CCR5, thereby blocking the HIV protein gp120 from associating with the receptor. Maraviroc (brand-named Selzentry, or Celsentri) displays potent anti-HIV-1 activity. UK-427857 prevents the interaction of HIV-1 gp120 and CCR5 (IC50 = 6.4 nM), inhibiting HIV-1 entry. Maraviroc has no detectable in vitro cytotoxicity and is highly selective for CCR5, as confirmed against a wide range of receptors and enzymes, including the hERG ion channel (50% inhibitory concentration, >10 μM), indicating potential for an excellent clinical safety profile. Maraviroc also appeared to reduce graft-versus-host disease in patients treated with allogeneic bone marrow transplantation for leukemia, in a phase 1/2 study. In addition, those who received the entry inhibitor had a mean increase in CD4 cells of 110 cells/µL in the once-daily group, 106 cells/µL in the twice-daily group, and 56 cells/µL in the placebo group.

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
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.

Chemical Information
Molecular Weight 513.67
Formula C29H41F2N5O
CAS Number 376348-65-1
Purity 99.89%
Solubility DMSO 100 mg/mL
Ethanol 100 mg/mL
Storage at -20°C

New insights into the mechanisms whereby low molecular weight CCR5 ligands inhibit HIV-1 infection.
Garcia-Perez J, et al. J Biol Chem. 2011 Feb 18;286(7):4978-90. PMID: 21118814.

Maraviroc (UK-427,857), a potent, orally bioavailable, and selective small-molecule inhibitor of chemokine receptor CCR5 with broad-spectrum anti-human immunodeficiency virus type 1 activity.
Dorr P, et al. Antimicrob Agents Chemother. 2005 Nov;49(11):4721-32. PMID: 16251317.

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Keywords: Maraviroc, Selzentry, Celsentri, UK-427857 supplier, CCR, inhibitors

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