Rifabutin is a rifamycin antibiotic. It is active against a variety of Gram-positive and Gram-negative bacteria, including 81 clinical isolates of H. pylori (MIC50 = 0.25 µg/ml), as well as S. aureus, S. pyogenes, and C. trachomatis (MICs = 0.004, 0.005, and ~0.008 µg/ml, respectively). Rifabutin (0.5 µg/ml) is also...

Rifampicin is a rifamycin antibiotic and inhibitor of bacterial RNA polymerase (IC50 = 0.01 µg/ml for the E. coli enzyme). It inhibits the growth of M. tuberculosis H37Rv in mouse peritoneal macrophages (MIC = 0.8 µg/ml) as well as clinical isolates of various species of Staphylococcus, Streptococcus, Haemophilus,...

3-formyl Rifamycin is an intermediate of rifampicin (Cay-14423) that has been used to develop several rifamycin derivatives with antibiotic activity that targets RNA synthesis.Formal Name: 3-formyl-rifamycin. CAS Number: 13292-22-3. Synonyms: 3-formyl Rifampicin SV, NCI 145-635, Rifaldehyde. Molecular Formula:...

Rifapentine is a long-lasting rifamycin antibiotic that inhibits DNA-dependent RNA polymerases and is effective against Mycobacterium species, including M. tuberculosis, as well as experimental infections caused by S. aureus, S. pyogenes group A, S. pneumoniae, and K. pneumoniae.Formal Name:...

Rifamycin SV is a broad-spectrum antibiotic that inhibits bacterial DNA-dependent RNA polymerase. It is effective against Gram-positive bacteria but only moderately active against Gram-negative bacteria.Formal Name: rifamycin, monosodium salt, hydrate. Synonyms: CB 01-11, NSC 146718. Molecular Formula: C37H46NO12 ....

Rifaximin is an antibiotic derived from rifamycin SV (Cay-21441) that inhibits the growth of a variety of Gram-positive and Gram-negative bacteria in vitro, including Staphylococcus, Streptococcus, Enterococcus, H. influenzae, and N. gonorrhoeae (MIC50s = =0.015, 50 = ~20 µM) that reduces colonic damage, rectal...

Rifaximin-d6 is intended for use as an internal standard for the quantification of rifaximin (Cay-16131) by GC- or LC-MS. Rifaximin is an antibiotic derived from rifamycin SV (Cay-21441) that inhibits the growth of a variety of Gram-positive and Gram-negative bacteria in vitro, including Staphylococcus,...

Rifampicin-d3 is intended for use as an internal standard for the quantification of rifampicin (Cay-14423) by GC- or LC-MS. Rifampicin is a rifamycin antibiotic and inhibitor of bacterial RNA polymerase (IC50 = 0.01 µg/ml for the E. coli enzyme). It inhibits the growth of M. tuberculosis H37Rv in mouse peritoneal...

Rifabutin-d7 is intended for use as an internal standard for the quantification of rifabutin (Cay-16468) by GC- or LC-MS. Rifabutin is a rifamycin antibiotic. It is active against a variety of Gram-positive and Gram-negative bacteria, including 81 clinical isolates of H. pylori (MIC50 = 0.25 µg/ml), as well as S....

Rifapentine-d9 is intended for use as an internal standard for the quantification of rifapentine (Cay-20307) by GC- or LC-MS. Rifapentine is a long-lasting rifamycin antibiotic that inhibits DNA-dependent RNA polymerases and is effective against Mycobacterium species, including M. tuberculosis, as well as...