ChemicalBook CAS DataBase List 944252-63-5

944252-63-5

Name	Lemborexant
CAS	944252-63-5
Molecular Formula	C73H112N22O16
MDL Number	MFCD32214888
Molecular Weight	1553.84
MOL File	944252-63-5.mol

Chemical Properties

Boiling point	1894.3±65.0 °C(Predicted)
density	1.39±0.1 g/cm3(Predicted)
pka	12.90±0.70(Predicted)
Sequence	cyclo[Ala-Ser-D-Pro-Pro-Thr-Trp-Ile-Dab-Orn-D-Dab-Dab-Trp-Dab-Dab]
InChIKey	RIDRXGOBXZLKHZ-DLVLNFPJNA-N

Safety Data

Symbol(GHS)	GHS06
Signal word	Danger
Hazard statements	H301+H311+H331

Hazard Information

Uses

Murepavadin (POL7080), a 14-amino-acid cyclic peptide, is a highly potent, specific antibiotic. Murepavadin exhibits a potent antimicrobial activity for P. aeruginosa with both MIC50 and MIC90 values of 0.12 mg/L. Murepavadin also can target the lipopolysaccharide transport portin D. Murepavadin can be used for the research of bacterial resistance[1][2].

in vivo

Murepavadin (s.c.; 0-100 mg/kg) is active in pre-clinical animal models including infections with XDR isolates^[2].

Animal Model:	murine models of P. aeruginosa infection^[2]
Dosage:	0-100 mg/kg
Administration:	Subcutaneous, q24h or q12h
Result:	Resulted in an increase in survival rate to 100% and showed significantly lower CFU levels both in the blood and in the peritoneal fluid at 2 and 10 mg/kg 1 h post-infection.

Animal Model:	Mouse, rat, rabbit, and monkey^[2]
Dosage:	0-5 mg/kg
Administration:	Intraperitoneal or subcutaneous, single
Result:	Followed a two-compartment model following intravenous administration and decline of plasma concentrations. Distributed into the aqueous phase of the body, and systemic plasma clearance (CL) values were similar to the species-specific glomerular filtration rates (GFRs) . Had high bioavailability (67.79%) after subcutaneous (s.c.) administration in rats but had low oral bioavailability (<0.01%). Had a linear relationship between ELF AUC and unbound plasma AUC in mouse. Did not readily cross the blood/brain barrier.

References

[1] Matteo Bassetti, et al. New antibiotics for ventilator-associated pneumonia. Curr Opin Infect Dis. 2018 Jan 13.
[2] Ignacio Martin-Loeches, et al. Murepavadin: a new antibiotic class in the pipeline. Expert Rev Anti Infect Ther. 2018 Apr;16(4):259-268. DOI:10.1080/14787210.2018.1441024

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