Radezolid|cas 869884-78-6|DC Chemicals

Cas No.:	869884-78-6
Synonyms:	RX-1741;RX 1741;RX1741
SMILES:	CC(NC[C@H]1CN(C2=CC=C(C3=CC=C(CNCC4=CN=NN4)C=C3)C(F)=C2)C(O1)=O)=O
Formula:	C₂₂H₂₃FN₆O₃
M.Wt:	438.4548
Purity:	>98%
Sotrage:	2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

Description:	Radezolid (RX-1741) is a novel oxazolidinone antibiotic agent. Radezolid is a novel oxazolidinone antibiotic being developed by Rib-X Pharmaceuticals, Inc. for the treatment of serious multi-drug–resistant infections. Radezolid has completed two phase-II clinical trials. One of these clinical trials was for uncomplicated skin and skin-structure infections (uSSSI) and the other clinical trial was for community acquired pneumonia (CAP). From Wikipedia
In Vitro:	Radezolid MICs are systematically equal to or lower (up to 3 log2 dilutions) than those of linezolid for all linezolid-susceptible strains, with an 8-fold difference for the linezolid-resistant strains. Radezolid shows a greater potency than linezolid, independent of the bacteria tested, when concentrations are expressed on a weight (mg/L) basis. Radezolid shows an improved potency compared to that of linezolid when concentrations are expressed on a weight (mg/L) basis[1]. Radezolid and TR-700 perform well against 3-copy G2447T, G2576T, and G2576T/T2571C mutants[2].
Cell Assay:	Antibiotic accumulation is determined following the general procedure, and the cellular content of [14C]radezolid is assayed in cell lysates by liquid scintillation counting (lowest limit of detection, 0.003 mg/liter; linear response between 0.01 and 0.78 mg/liter; R2=0.999). All cell drug contents are expressed by reference to the total cell protein content and converted into apparent total cell concentrations using a conversion factor of 5 μL per mg of cell protein.
References:	[1]. Lemaire S, et al. Cellular pharmacodynamics of the novel biaryloxazolidinone radezolid: studies with infected phagocytic and nonphagocytic cells, using Staphylococcus aureus, Staphylococcus epidermidis, Listeria monocytogenes, and Legionella pneumophila. [2]. Locke JB, et al. Structure-activity relationships of diverse oxazolidinones for linezolid-resistant Staphylococcus aureus strains possessing the cfr methyltransferase gene or ribosomal mutations. Antimicrob Agents Chemother. 2010 Dec;54(12):5337-43.

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