Rifabutin (LM427)

Catalog No.S1741 Batch:S174101

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Technical Data

Formula

C46H62N4O11
Molecular Weight 847 CAS No. 72559-06-9
Solubility (25°C)* In vitro DMSO 60 mg/mL (70.83 mM)
Ethanol 40 mg/mL (47.22 mM)
Water Insoluble
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

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Biological Activity

Description Rifabutin (LM427, Ansamycin) is a semisynthetic ansamycin antibiotic, used in the treatment of Mycobacterium avium intracellulare (MAI) and tuberculosis.
In vitro Rifabutin has a broad spectrum of antimicrobial activity. Rifabutin is considerably more active than rifampin in vitro against the Mycobacterium avium complex (MAC), Mycobacterium tuberculosis, and Mycobacterium leprae. Rifabutin also is active against most atypical mycobacteria, including Mycobacterium kansasii, but Mycobacterium chelonae is relatively resistant. Rifabutin also is active against staphylococci, group A streptococci, Neisseria gonorrhoeae, Neisseria meningitidis, Haemophilus influenzae, Haemophilus ducreyi, Campylobacter jejuni, Helicobacter pylori, Chlamydia trachomatis, and Toxoplasma gondii. [1] Rifabutin shows an isoenzyme-selectivity profile similar to that produced by Rifampicin, but the maximally achievable induction of cytochrome P-450 3A by Rifabutin is about two-fold lower compared with Rifampicin. Rifabutin enhances the glucuronidation of 1-naphthol, 4-hydroxybiphenyl and beta-estradiol by a factor of two to three. [2]
In vivo Rifabutin increases the human CYP3A4 mRNA expression, CYP3A4 protein content, testosterone 6ss-hydroxylase activity and dexamethasone 6-hydroxylase activity by 7.4-, 3.0-, 2.4- and 1.9-fold, respectively, in the chimeric mice. [3] Rifabutin (100 mg/kg) combined with Pyrimethamine (10 mg/kg) protects 75% of the mice infected with a lethal inoculum of tachyzoites or cysts of Toxoplasma gondii against death. [4]

Protocol (from reference)

Selleck's Rifabutin (LM427) has been cited by 8 publications

Low-Dose Rifabutin Increases Cytotoxicity in Antimitotic-Drug-Treated Resistant Cancer Cells by Exhibiting Strong P-gp-Inhibitory Activity [ Int J Mol Sci, 2022, 23(13)7383] PubMed: 35806386
Terconazole, an Azole Antifungal Drug, Increases Cytotoxicity in Antimitotic Drug-Treated Resistant Cancer Cells with Substrate-Specific P-gp Inhibitory Activity [ Int J Mol Sci, 2022, 23(22)13809] PubMed: 36430288
Efficacy and Mode of Action of a Direct Inhibitor of Mycobacterium abscessus InhA [ ACS Infect Dis, 2022, 8(10):2171-2186] PubMed: 36107992
Activity of Drug Combinations against Mycobacterium abscessus Grown in Aerobic and Hypoxic Conditions [ Microorganisms, 2022, 10(7)1421] PubMed: 35889140
Targeting Intracellular Mycobacteria Using Nanosized Niosomes Loaded with Antibacterial Agents [ Nanomaterials (Basel), 2021, 11(8)1984] PubMed: 34443815
Rifabutin is bactericidal against intracellular and extracellular forms of Mycobacterium abscessus [ Antimicrob Agents Chemother, 2020, AAC.00363-20] PubMed: 32816730
Rifabutin Suppresses Inducible Clarithromycin Resistance in Mycobacterium abscessus by Blocking Induction of whiB7 and erm41. [ Antibiotics (Basel), 2020, 9(2)] PubMed: 32050554
Rifabutin Suppresses Inducible Clarithromycin Resistance inMycobacterium abscessusby Blocking Induction ofwhiB7anderm41 [ Antibiotics , 2020, 9(2), 72] PubMed: none

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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