Contezolid (MRX-I), a new and oraly active oxazolidinone, is an antibiotic in study for complicated skin and soft tissue infections (cSSTI) caused by resistant Gram-positive bacteria. Contezolid (MRX-I) markedly reduces potential for myelosuppression and monoamine oxidase inhibition (MAOI).

Product information

CAS Number: 1112968-42-9

Molecular Weight: 408.33

Formula: C18H15F3N4O4

Chemical Name: 1-{2,3,6-trifluoro-4-[(5S)-5-{[(1,2-oxazol-3-yl)amino]methyl}-2-oxo-1,3-oxazolidin-3-yl]phenyl}-1,2,3,4-tetrahydropyridin-4-one

Smiles: O=C1CCN(C=C1)C1=C(F)C(F)=C(C=C1F)N1C[C@H](CNC2C=CON=2)OC1=O

InChiKey: SULYVXZZUMRQAX-NSHDSACASA-N

InChi: InChI=1S/C18H15F3N4O4/c19-12-7-13(15(20)16(21)17(12)24-4-1-10(26)2-5-24)25-9-11(29-18(25)27)8-22-14-3-6-28-23-14/h1,3-4,6-7,11H,2,5,8-9H2,(H,22,23)/t11-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

Contezolid (MRX-I) is highly potent against all Grampositive clinical isolates of staphylococci, streptococci, and enterococci, including MDR organisms such as MRSA, methicilline-resistant Streptococcus epidermidis (MRSE), penicillin-resistant Streptococci (PRSP), and VRE.

In Vivo:

Oral absorption of Contezolid (MRX-I) occurrs rapidly in mouse, rat, and dog, with peak plasma concentrations observed at 0.5−2.6 h postdose. In mouse, rat, and dog, respectively, PK parameters are determined as follows: dose-normalized Cmax/dose was 524, 1065, and 259 ng/mL/(mg/kg); dose-normalized AUC0−t/dose was 1654, 3703, and 1664 ng•h/mL/(mg/kg); T1/2 is 1, 1.5, and 3 h; and the oral bioavailability is 69%, 109%, and 37%. Contezolid (MRX-I) exhibits no obvious toxicity. Contezolid (MRX-I, 100 mg/kg, once daily) significantly reduced the bacterial load in lungs compared to the untreated early and late controls.

Products are for research use only. Not for human use.