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  3. BX471 hydrochloride

BX471 hydrochloride  (Synonyms: ZK-811752 hydrochloride)

Cat. No.: HY-12080A Purity: 99.51%
COA Handling Instructions

BX471 hydrochloride (ZK-811752 hydrochloride) is a potent, selective non-peptide CCR1 antagonist with Ki of 1 nM for human CCR1, and exhibits 250-fold selectivity for CCR1 over CCR2, CCR5 and CXCR4.

For research use only. We do not sell to patients.

BX471 hydrochloride Chemical Structure

BX471 hydrochloride Chemical Structure

CAS No. : 288262-96-4

Size Price Stock Quantity
10 mM * 1 mL in DMSO USD 165 In-stock
Solid + Solvent
10 mM * 1 mL
ready for reconstitution
USD 165 In-stock
10 mg USD 150 In-stock
50 mg USD 490 In-stock
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Customer Review

Based on 10 publication(s) in Google Scholar

Other Forms of BX471 hydrochloride:

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  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review


BX471 hydrochloride (ZK-811752 hydrochloride) is a potent, selective non-peptide CCR1 antagonist with Ki of 1 nM for human CCR1, and exhibits 250-fold selectivity for CCR1 over CCR2, CCR5 and CXCR4.

IC50 & Target[1]


1 nM (Ki)


2.8 nM (Ki)


5.5 nM (Ki)

In Vitro

BX471 is a potent functional antagonist based on its ability to inhibit a number of CCR1-mediated effects including Ca2+ mobilization, increase in extracellular acidification rate, CD11b expression, and leukocyte migration. BX471 demonstrats a greater than 10,000-fold selectivity for CCR1 compared with 28 G-protein-coupled receptors[1]. BX471 is also able to displace 125I-MIP-1α/CCL3 binding to mouse CCR1 in a concentration-dependent manner with a Ki of 215±46 nM. Increasing concentrations of BX471 inhibits the Ca2+ transients induced by MIP-1α/CCL3 in both human and mouse CCR1 with IC50 of 5.8±1 nM and 198±7 nM, respectively[2]. BX471 (0.1-10 μM) shows a dose-dependent inhibition of RANTES-mediated and shear-resistant adhesion on IL-1β-activated microvascular endothelium in shear flow in isolated blood monocytes. BX471 also inhibits the RANTES-mediated adhesion of T lymphocytes to activated endothelium[4].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

BX471 (4 mg/kg, p.o. or i.v.) is orally active with a bioavailability of 60% in dogs. Furthermore, BX471 effectively reduces disease in a rat experimental allergic encephalomyelitis model of multiple sclerosis[1]. BX471 (20 mg/kg, s.c.) reaches peak plasma levels of 9 μM by around 30 minutes, and this rapidly declines to approximately 0.4 μM after 2 hours. From 4 to 8 hours the drug plasma levels drops to 0.1 μM or lower. Mice treated with 20 mg/kg of BX471 for 10 days shows a reduction of interstitial CD45 positive leukocytes of approximately 55%. BX471 has a borderline significant effect on the number of CCR5-positive CD8 cells in the peripheral blood. BX471 reduces the amount of FSP1-positive cells by 65% in UUO kidneys as compared with vehicle control[2]. Pretreatment witih BX471 reduces macrophage and neutrophil accumulation in kidney after ischemia-reperfusion injury[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight







O=C(N)NC1=CC(Cl)=CC=C1OCC(N2[[email protected]](C)CN(CC3=CC=C(F)C=C3)CC2)=O.[H]Cl


Room temperature in continental US; may vary elsewhere.


-20°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

DMSO : 150 mg/mL (318.23 mM; Need ultrasonic)

H2O : < 0.1 mg/mL (ultrasonic) (insoluble)

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.1216 mL 10.6078 mL 21.2157 mL
5 mM 0.4243 mL 2.1216 mL 4.2431 mL
10 mM 0.2122 mL 1.0608 mL 2.1216 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 3 mg/mL (6.36 mM); Clear solution

  • 2.

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 3 mg/mL (6.36 mM); Clear solution

  • 3.

    Add each solvent one by one:  10% DMSO    90% corn oil

    Solubility: ≥ 3 mg/mL (6.36 mM); Clear solution

*All of the co-solvents are available by MCE.
Purity & Documentation
Cell Assay

Briefly, dermal microvascular endothelial cells grown to confluence in Petri dishes are stimulated with IL-1β (10 ng/mL) for 12 h followed by pre-incubation with RANTES (10 nM) for 30 min at 37°C just prior to assay. The plates are assembled as the lower wall in a parallel wall flow chamber and mounted on the stage of an Olympus IMT-2 inverted microscope with ×20 and ×40 phase-contrast objectives. Isolated human blood monocytes are isolated and resuspended at 5×105 cells/mL in assay buffer (HBSS) containing 10 mM HEPES, pH 7.4 and 0.5% human serum albumin. Shortly before the assay, 1 mM Mg2+ and 1 mM Ca2+ are added. The cell suspensions are kept in a heating block at 37°C during the assay and perfused into the flow chamber at a rate of 1.5 dyn/cm2 for 5 min. For inhibition experiments, monocytes are preincubated with BX471 at different concentrations (0.1-10 μM) or a Me2SO control for 10 min at 37°C. The number of firmLy adherent cells after 5 min is quantitated in multiple fields (at least five per experiment) by analysis of images recorded with a long integration JVC 3CCD video camera and a JVC SR L 900 E video recorder and are expressed as cells/mm2. The type of adhesion analyzed is restricted to primary, i.e. direct interactions of monocytes with endothelium.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Administration

Fasted male beagle dogs (n=3 per treatment group) are given BX471 either by oral gavage or by intravenous injection via the cephalic vein at a dose of 4 mg/kg. The compound is dissolved in a vehicle of 40% aqueous cyclodextrin. Serial blood samples are collected utilizing an in-dwelling catheter in the jugular vein at the indicated time points up to 6 h post-dosing. EDTA is used as an anticoagulant. The samples are centrifuged (1000× g for 10 min at 4°C), and plasma is stored frozen until analyzed for drug levels by HPLC-MS (electrospray mode operated under a positive ion mode). Plasma samples are thawed and denatured by the addition of four parts of ice-cold methanol containing a fixed amount of an internal standard to one part of plasma. The resulting protein precipitate is removed by centrifugation at 5000× g, and the supernatants are analyzed directly. Concurrently plasma calibration standards of BX471 are prepared over the range of quantification, processed, and analyzed under identical conditions. A FISONS, VG Platform single quadrupole instrument is used in these analyses with an electrospray inlet operated at 3.57 kV. Chromatographic separation is accomplished using a YMC AQ octadecyl silane reversed phase column (4.6×250 mm) following a short isocratic elution method (35% methanol, 65% water containing 0.1% trifluoroacetic acid). The total column flow (1 mL/min) is split post-column to infuse 50 μL/min into the mass spectrometer. The chromatograms are collected over a total run time of 7.5 min/sample following a 50-μL injection on the column. The ions are collected in a single ion positive ionization mode. A calibration curve for quantification is generated by plotting ion current ratios between the internal standard peak and the analyte in the plasma standards over the quantification range. Calculations of percent oral availability is deduced from the area under curve measurements. Pharmacokinetic parameters are calculated using WinNonLin version 3.0.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

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  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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