Contezolid acefosamil sodium

Modify Date: 2024-01-12 15:43:21

Contezolid acefosamil sodium Structure
Contezolid acefosamil sodium structure
Common Name Contezolid acefosamil sodium
CAS Number 1807365-35-0 Molecular Weight 552.33
Density N/A Boiling Point N/A
Molecular Formula C20H17F3N4NaO8P Melting Point N/A
MSDS N/A Flash Point N/A

 Use of Contezolid acefosamil sodium


Contezolid acefosamil sodium (MRX-4), a new and orally active oxazolidinone, is an antibiotic in study for complicated skin and soft tissue infections (cSSTI) caused by resistant Gram-positive bacteria. Contezolid acefosamil sodium (MRX-4) markedly reduces potential for myelosuppression and monoamine oxidase inhibition (MAOI)[1][2].

 Names

Name Contezolid acefosamil
Synonym More Synonyms

 Contezolid acefosamil sodium Biological Activity

Description Contezolid acefosamil sodium (MRX-4), a new and orally active oxazolidinone, is an antibiotic in study for complicated skin and soft tissue infections (cSSTI) caused by resistant Gram-positive bacteria. Contezolid acefosamil sodium (MRX-4) markedly reduces potential for myelosuppression and monoamine oxidase inhibition (MAOI)[1][2].
Related Catalog
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[2].
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%[2]. Contezolid (MRX-I) exhibits no obvious toxicity[2]. Contezolid (MRX-I, 100 mg/kg, once daily) significantly reduced the bacterial load in lungs compared to the untreated early and late controls[3]. Animal Model: BALB/c mice infected intranasally with M. tuberculosis Erdman[3]. Dosage: 100, 50 (twice), 25 (twice) mg/kg. Administration: Gavage, once or twice daily, five days per week for four weeks. Result: Significantly reduced the CFU recovered from the lungs compared to the early and late control mice (P < 0.05). Twice daily MRX-I at 50mg/kg and 25 mg/kg were significantly better than the late control mice (P < 0.05). Once daily MRX-I at 100 mg/kg was significantly better than twice daily 50 mg/kg and 25 mg/kg (P < 0.05). There was no statistical difference between twice daily 50 mg/kg of MRX-I and 25mg/kg (P > 0.05). Animal Model: Rats[2]. Dosage: 20, 100, and 200/300 mg/kg/day. Administration: Orally twice daily. Result: No mortality was observed.
References

[1]. Junzhen Wu, et al. Evaluation of the Effect of Contezolid (MRX-I) on the Corrected QT Interval in a Randomized, Double-Blind, Placebo- and Positive-Controlled Crossover Study in Healthy Chinese Volunteers. Antimicrob Agents Chemother. 2020 May 21;64(6):e02158-19.

[2]. Mikhail F Gordeev, et al. New potent antibacterial oxazolidinone (MRX-I) with an improved class safety profile. J Med Chem. 2014 Jun 12;57(11):4487-97.

[3]. Carolyn Shoen, et al. In Vitro and In Vivo Activities of Contezolid (MRX-I) against Mycobacterium tuberculosis. Antimicrob Agents Chemother. 2018 Jul 27;62(8):e00493-18.

 Chemical & Physical Properties

Molecular Formula C20H17F3N4NaO8P
Molecular Weight 552.33
Exact Mass 552.063354

 Synonyms

Phosphoramidic acid, N-[[(5R)-3-[4-(3,4-dihydro-4-oxo-1(2H)-pyridinyl)-2,3,5-trifluorophenyl]-2-oxo-5-oxazolidinyl]methyl]-N-3-isoxazolyl-, acetyl ester, sodium salt (1:1)
T79C086548
UNII:T79C086548
UNII-T79C086548
Contezolid acefosamil