Shopping Cart
- Remove All
 
Your shopping cart is currently empty
Rifalazil (KRM-1648) is a benzophenazine antibiotic with antibacterial activity. It inhibits bacterial RNA polymerase, blocking the β-subunit, and is used in Chlamydia infection research.

| Pack Size | Price | Availability | Quantity | 
|---|---|---|---|
| 2 mg | $99 | In Stock | 
| Description | Rifalazil (KRM-1648) is a benzophenazine antibiotic with antibacterial activity. It inhibits bacterial RNA polymerase, blocking the β-subunit, and is used in Chlamydia infection research.  | 
| In vitro | The MIC50 values of Rifalazil were 0.0015, 0.0039 and 0.0313 μg/ml for Clostridium difficile, Clostridium perfringens and Bacteroides fragile, respectively. Rifalazi showed antibacterial activity against gram-negative gut bacteria with MIC50 values of 16 μg/ml for Escherichia coli and 16 ug/ml for Klebsiella pneumoniae. [1] The MIC of Rifalazil against rifampicin-resistant mutants of Chlamydia pneumoniae was 0.125 μg/ml. [4]  | 
| In vivo | Treatment with Rifalazil (5 or 10 mg/kg orally for 15 weeks) improved the redness and swelling of the foot pads in mice with ulcer-infected models. [2] Rifalazil (20 mg/kg for 5 days) can treat and prevent recurrence of Clostridium difficile-associated diarrhea in hamsters. [3]  | 
| Synonyms | KRM-1648, KRM1648, ABI-1648, ABI1648 | 
| Molecular Weight | 941.07 | 
| Formula | C51H64N4O13 | 
| Cas No. | 129791-92-0 | 
| Smiles | C[C@H]1/C=C/C=C(C)\C(NC2=C3C(N=C4C(O3)=CC(N5CCN(CC(C)C)CC5)=CC4=O)=C6C(C2=O)=C(O)C(C)=C7C6=C(O)[C@](O/C=C/[C@H](OC)[C@@H](C)[C@@H](OC(C)=O)[C@H](C)[C@H](O)[C@H](C)[C@H]1O)(C)O7)=O | 
| Relative Density. | 1.31g/cm3 | 
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. | ||||||||||
| Solubility Information | DMSO: 4 mg/mL (4.25 mM), Sonication is recommended.   | ||||||||||
Solution Preparation Table  | |||||||||||
DMSO 
  | |||||||||||

Copyright © 2015-2025 TargetMol Chemicals Inc. All Rights Reserved.