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Citreamicin alpha (LL-E 19085-alpha) is an antibiotic that has been evaluated for its in vitro antibacterial activity against 429 clinical isolates of Gram-positive cocci using the agar dilution method. This study included 313 strains of staphylococci and 116 strains of streptococci. Its in vitro efficacy was compared with ampicillin, amoxicillin, cephalothin, erythromycin, and vancomycin. For staphylococci, Citreamicin alpha demonstrated MIC values ranging from 0.12 to 4.0 μg/ml, and for Streptococcus pyogenes, the MIC values ranged from 0.03 to 0.12 μg/ml. Conversely, enterococci presented relative resistance, requiring 2.0 μg/ml to inhibit 64% of 62 tested strains. The antibiotic's in vitro efficacy significantly surpassed that of ampicillin, amoxicillin, cephalothin, and erythromycin, while it was comparable to or slightly less effective than vancomycin.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 10 mg | Inquiry | 10-14 weeks | 10-14 weeks | |
| 50 mg | Inquiry | 10-14 weeks | 10-14 weeks |
| Description | Citreamicin alpha (LL-E 19085-alpha) is an antibiotic that has been evaluated for its in vitro antibacterial activity against 429 clinical isolates of Gram-positive cocci using the agar dilution method. This study included 313 strains of staphylococci and 116 strains of streptococci. Its in vitro efficacy was compared with ampicillin, amoxicillin, cephalothin, erythromycin, and vancomycin. For staphylococci, Citreamicin alpha demonstrated MIC values ranging from 0.12 to 4.0 μg/ml, and for Streptococcus pyogenes, the MIC values ranged from 0.03 to 0.12 μg/ml. Conversely, enterococci presented relative resistance, requiring 2.0 μg/ml to inhibit 64% of 62 tested strains. The antibiotic's in vitro efficacy significantly surpassed that of ampicillin, amoxicillin, cephalothin, and erythromycin, while it was comparable to or slightly less effective than vancomycin. |
| Synonyms | LL-E19085α |
| Molecular Weight | 669.63 |
| Formula | C36H31NO12 |
| Cas No. | 122535-63-1 |
| Smiles | O=C1C=2OC3=CC(OC)=C(OC)C=C3C(=O)C2C(=O)C=4C1=CC=C5C=C6C(C(=O)N7C(OC(=O)C7(C)COC(=O)CC(C)C)(C)C6)=C(O)C54 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. |
Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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