Rifabutin
Based on 7 publication(s) in Google Scholar
Rifabutin (Ansamycin) is a semisynthetic ansamycin antibiotic with potent antimycobacterial properties. Rifabutin inhibits DNA-dependent RNA polymerase.
For research use only. We do not sell to patients.
- Purity: 99.15%
- CAS No.: 72559-06-9
- Formula: C46H62N4O11
- Molecular Weight:847.00
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
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Publications Citing Use of MedChemExpress (MCE) Rifabutin
More- Proc Natl Acad Sci U S A. 2023 Mar 7;120(10):e2217804120. [Abstract]
- Antimicrob Agents Chemother. 2024 Oct 29:e0094524. [Abstract]
- Antimicrob Agents Chemother. 2024 Oct 29:e0105124. [Abstract]
- Antimicrob Agents Chemother. 2023 Feb 16;67(2):e0145922. [Abstract]
- Microbiol Spectr. 2021 Sep 3;9(1):e0004521. [Abstract]
- Clin Exp Pharmacol Physiol. 2022 Jul;49(7):767-775. [Abstract]
- Authorea. 2025 Sep 17.
All DNA/RNA Synthesis Isoforms
MoreAll Antibiotic Isoforms
More
Biological Activity
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RNA Polymerase |
Rifabutin is primarily bactericidal antibiotic drug used to treat tuberculosis. Its effect on bacteria is based on the DNA-dependent RNA polymerase blocking drug rifamycin S., a semi-synthetic derivative. It is effective, for example, in highly resistant mycobacteria, Gram-positive bacteria (and some are effective against Gram-negative bacteria), but also against Mycobacterium tuberculosis, M. leprae, and M. avium intracellulare. Rifabutin is an antibiotic; antitumor. Rifabutin interferes with HSP-90 molecular chaperone, enhances ubiquitination and protein degradation, and inactivates bacterial RNA polymerase.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
| NCT Number | Sponsor | Condition | Start Date |
Phase
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|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 72559-06-9
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Appearance Solid
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Molecular Weight 847.00
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Formula C46H62N4O11
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Color Purple to purplish red
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SMILES
C[C@H]1/C=C/C=C(C)\C(/N=C2C(O)=C3C(C4=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)C4=O)C(C)=C3O)=C5C/2=NC6(CCN(CC(C)C)CC6)N5)=O
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Synonyms
Ansamycin; LM-427
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 2 years -20°C 1 year
Publications (7)
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Journal Impact Factor
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Most Recent
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Proc Natl Acad Sci U S A
Structure-guided approach to modulate small molecule binding to a promiscuous ligand-activated protein. [Abstract]2023 Mar 7;120(10):e2217804120. PMID: 36848571 -
Antimicrob Agents Chemother
2024 Oct 29:e0094524. PMID: 39470202 -
Antimicrob Agents Chemother
Multidrug tolerance conferred by loss-of-function mutations in anti-sigma factor RshA of Mycobacterium abscessus. [Abstract]2024 Oct 29:e0105124. PMID: 39470195 -
Antimicrob Agents Chemother
Activity of Oral Tebipenem-Avibactam in a Mouse Model of Mycobacterium abscessus Lung Infection. [Abstract]2023 Feb 16;67(2):e0145922. PMID: 36688684 -
Microbiol Spectr
In Vitro Synergy Testing of Eravacycline in Combination with Clarithromycin and Rifabutin against Mycobacterium abscessus Complex. [Abstract]2021 Sep 3;9(1):e0004521. PMID: 34132613 -
Clin Exp Pharmacol Physiol
2022 Jul;49(7):767-775. PMID: 35531776 -
Solvent & Solubility
DMSO : 50 mg/mL (59.03 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (2.95 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
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Data Sheet (286 KB)
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SDS (396 KB)
- English - EN (396 KB)
- Français - FR (396 KB)
- Deutsch - DE (396 KB)
- Norwegian - NO (396 KB)
- Español - ES (396 KB)
- Swedish - SV (396 KB)
- Italian - IT (396 KB)
- Portuguese - PT (396 KB)
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Handling Instructions (2659 KB)
References
[2]. Vourvahis M, Davis J, Wang R, Layton G, Choo HW, Chong CL, Tawadrous M. Effect of rifampin and rifabutin on the pharmacokinetics of lersivirine and effect of lersivirine on the pharmacokinetics of rifabutin and 25-o-desacetyl-rifabutin in healthy subjects. Antimicrob Agents Chemother. 2012 Aug;56(8):4303-9. [Content Brief]
[3]. Gisbert JP, Castro-Fernandez M, Perez-Aisa A, Cosme A, Molina-Infante J, Rodrigo L, Modolell I, Cabriada JL, Gisbert JL, Lamas E, Marcos E, Calvet X. Fourth-line rescue therapy with rifabutin in patients with three Helicobacter pylori eradication failures. Aliment Pharmacol Ther. 2012 Apr;35(8):941-7. doi: 10.1111/j.1365-2036.2012.05053.x. [Content Brief]
[4]. Gisbert JP, Calvet X. Review article: rifabutin in the treatment of refractory Helicobacter pylori infection. Aliment Pharmacol Ther. 2012 Jan;35(2):209-21. doi: 10.1111/j.1365-2036.2011.04937.x. [Content Brief]
[5]. Horne DJ, Spitters C, Narita M. Experience with rifabutin replacing rifampin in the treatment of tuberculosis. Int J Tuberc Lung Dis. 2011 Nov;15(11):1485-9, i. [Content Brief]
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
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| DMSO | 1 mM | 1.1806 mL | 5.9032 mL | 11.8064 mL | 29.5159 mL |
| 5 mM | 0.2361 mL | 1.1806 mL | 2.3613 mL | 5.9032 mL | |
| 10 mM | 0.1181 mL | 0.5903 mL | 1.1806 mL | 2.9516 mL | |
| 15 mM | 0.0787 mL | 0.3935 mL | 0.7871 mL | 1.9677 mL | |
| 20 mM | 0.0590 mL | 0.2952 mL | 0.5903 mL | 1.4758 mL | |
| 25 mM | 0.0472 mL | 0.2361 mL | 0.4723 mL | 1.1806 mL | |
| 30 mM | 0.0394 mL | 0.1968 mL | 0.3935 mL | 0.9839 mL | |
| 40 mM | 0.0295 mL | 0.1476 mL | 0.2952 mL | 0.7379 mL | |
| 50 mM | 0.0236 mL | 0.1181 mL | 0.2361 mL | 0.5903 mL |
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