BX 471

The CC chemokine receptor-1 (CCR1), whose ligands include macrophage inflammatory protein-1alpha (MIP-1alpha), RANTES, and monocyte chemotactic protein-3 (MCP-3), has a central role in leukocyte trafficking and is highly expressed in certain autoimmune diseases. BX 471 is a nonpeptide CCR1 antagonist that has been shown to displace MIP-1alpha, RANTES, and MCP-3 with Ki values of 1, 2.8, and 5.5 nM, respectively. It demonstrates >10,000-fold selectivity for CCR1 over 28 additional G protein-coupled receptors, including related chemokine receptors. In a rat experimental allergic encephalomyelitis model of multiple sclerosis, BX 471 at 50 mg/kg was shown to significantly reduce the severity of the disease. BX 471 also decreases the inflammatory response during sepsis, blocks migration of monocytes isolated from rheumatoid arthritis patients, and prevents macrophage and T-cell recruitment in a mouse model of lupus nephritis.Formal Name: N-[5-chloro-2-[2-[(2R)-4-[(4-fluorophenyl)methyl]-2-methyl-1-piperazinyl]-2-oxoethoxy]phenyl]-urea. CAS Number: 217645-70-0. Molecular Formula: C21H24ClFN4O3. Formula Weight: 434.9. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 30 mg/ml, DMF:PBS (pH 7.2) (1:9): 0.1 mg/ml, DMSO: 25 mg/ml, Ethanol: 14 mg/ml. lambdamax: 211, 244, 288 nm. SMILES: FC1=CC=C(CN2C[C@@H](C)N(C(COC3=CC=C(Cl)C=C3NC(N)=O)=O)CC2)C=C1. InChi Code: InChI=1S/C21H24ClFN4O3/c1-14-11-26(12-15-2-5-17(23)6-3-15)8-9-27(14)20(28)13-30-19-7-4-16(22)10-18(19)25-21(24)29/h2-7,10,14H,8-9,11-13H2,1H3,(H3,24,25,29)/t14-/m1/s1. InChi Key: XQYASZNUFDVMFH-CQSZACIVSA-N.