Rifabutin EP Impurity B CAS 51756-80-0
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 51756-80-0 |
| Molecular Formula | C37H46N2O12 |
| Molecular Weight | 710.77 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Rifabutin EP Impurity B (CAS 51756-80-0), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C37H46N2O12. Molecular weight: 710.77 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C37H46N2O12 |
| Molecular Weight | 710.77 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Nitrogen Atoms | 2 |
Related Rifabutin Standards
- Rifabutin EP Impurity D (CAS 62041-01-4)
- Rifabutin EP Impurity E (CAS 100324-63-8)
- Rifabutin Impurity 13 (CAS CATO-C4X-251213)
- Rifabutin Impurity 14 (CAS CATO-C4X-251214)
- Rifabutin EP Impurity C (CAS 2241829-23-0)
- Rifabutin Impurity 12 (14-epi-Rifabutin) (CAS CATO-C4X-251212)
- Rifabutin (CAS 72559-06-9)
- Rifabutin-d7 (CAS CATO-C4X-25121)
Recommended Standards
- 7-(((1R,2S,3E,5Z)-10-(4-Acetyl-3-hydroxy-2-propylphenoxy)-1-hydroxy-1-(3-(trifluoromethyl)phenyl)deca-3,5-dien-2-yl)thio)-4-oxo-4H-chromene-2-carboxylic acid (CAS 151581-24-7)
- Cefcapene Impurity 103 (CAS CATO-C4X-1824103)
- Citalopram Impurity 85 (CAS CATO-C4X-110985)
- Entacapone impurity 50 (CAS CATO-C4X-162950)
- Apixaban Impurity 25 (CAS CATO-C4X-108825)
- Afatinib (CAS 439081-18-2)
- N-Succinimidyl 4-[4-(Dimethylamino)phenylazo]benzoate (CAS 146998-31-4)
- 1-Methyl-5-(thiophen-2-yl)-1H-pyrazole (CAS 876316-68-6)
- 2-(3-(Trifluoromethyl)-1h-pyrazol-1-yl)acetonitrile (CAS 1006348-71-5)
- C-Peptide 2 (rat) (CAS 41594-08-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com