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Daptomycin
| Product Name | Daptomycin |
| Price: | Inquiry |
| Catalog No.: | CN00313 |
| CAS No.: | 103060-53-3 |
| Molecular Formula: | C72H101N17O26 |
| Molecular Weight: | 1620.67 g/mol |
| Purity: | >=98% |
| Type of Compound: | Alkaloids |
| Physical Desc.: | Powder |
| Source: | |
| Solvent: | Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc. |
| SMILES: |
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| Description | Daptomycin is a lipopeptide antibiotic with rapid in vitro bactericidal activity against gram-positive organisms. |
| In Vitro | Daptomycin has excellent in-vitro inhibitory and bactericidal activity against nafcillin-susceptible and resistant staphylococci (MIC90 less than or equal to 0.5 mg/L) and against enterococci (MIC90 less than or equal to 2.0 mg/L). Daptomycin is more active than vancomycin against the majority of isolated tested. With the exception of trimethoprim-sulphamethoxazole, daptomycin is the most active agent in vitro against enterococci, and is the most active against nafcillin-resistant staphylococci. Daptomycin and vancomycin show a marked increase in MIC when the inoculum is increased from 105 to 107 cfu/mL[1]. Daptomycin is effective within a very narrow range of drug concentrations (from 0.125 to 2.0 tLg/mL) and is more active than other agents tested against S. faecalis[2]. Daptomycin inhibits the formation of these nucleotide-linked intermediates[3]. |
| In Vivo | At a dose of 10 mg/kg given twice daily, daptomycin reduces the number of organisms per kidney significantly compared with that in infected untreated controls within 48 h after the initiation of therapy. At 20 mg/kg given once a day, daptomycin is less effective but reduces colony counts significantly after 4 days of therapy, and its activity is comparable to that of vancomycin or vancomycin-gentamicin given twice daily[2]. |
| Animal Admin | Inocula containing 109 CFU/mL are prepared from an 18-h brain heart infusion broth culture. The exact number in each inoculum is subsequently determined by the standard serial 10-fold dilution agar pour plate technique. Animals are challenged intravenously with a 1.0-mL inoculum. This inoculum is known to infect the renal medulla of normal rats. Twenty-four hours later the animals are divided into eight groups and are given either saline only (controls) or antibiotic therapy initiated with Daptomycin at 10 mg/kg (Daptomycin10), Daptomycin at 20 mg/kg (Daptomycin20), Daptomycin10 plus gentamicin at 1.5 mg/kg, vancomycin at 20 mg/kg, vancomycin at 20 mg/kg plus gentamicin at 1.5 mg/kg, ampicillin at 30 mg per rat per injection, and ampicillin at 30 mg per rat plus gentamicin at 1.5 mg/kg. Animals receive Daptomycin20 once daily; all other drugs are administered twice daily. Vancomycin and Daptomycin are given subcutaneously; ampicillin and gentamicin are given intramuscularly. Drugs are administered for up to 13 days. |
| Density | 1.5±0.1 g/cm3 |
| Boiling Point | 2078.2±65.0 °C at 760 mmHg |
| Flash Point | 1210.7±34.3 °C |
| Exact Mass | 1619.710327 |
| PSA | 702.02000 |
| LogP | -4.07 |
| Vapour Pressure | 0.0±0.3 mmHg at 25°C |
| Storage condition | Store at -20°C |