Rifapentine Impurity 7 CAS 27557-15-9
| CAS No. | 27557-15-9 |
| Molecular Formula | C38H45NO13 |
| Molecular Weight | 723.76 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Rifapentine Impurity 7 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Rifapentine Impurity 7 (CAS 27557-15-9), a pharmacopoeial impurity reference standard (molecular formula C38H45NO13, MW 723.76 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Rifapentine Impurity 7 (C38H45NO13) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C38H45NO13 |
| Molecular Weight | 723.76 g/mol |
| Purity | ≥96% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
Related Rifapentine Standards
- Rifapentine impurity 24 (CAS CATO-C4X-195924)
- Rifapentine impurity 25 (CAS CATO-C4X-195925)
- Rifapentine Impurity 13 (CAS CATO-C4X-195913)
- Rifapentine Impurity 14 (CAS CATO-C4X-195914)
- Rifapentine impurity 22 (CAS 75922-14-4)
- Rifapentine impurity 17 (CAS CATO-C4X-195917)
- Rifapentine impurity 20 (CAS CATO-C4X-195920)
- Rifapentine impurity 21 (CAS 26117-02-2)
Recommended Standards
- Manganese, [5,10,15,20-tetrakis(4-methylphenyl)-21H,23H-porphinato(2-)-κN21,κN22,κN23,κN24]-, (SP-4-1)- (CAS 67368-93-8)
- Darunavir-N-glucuronide, 96% (CAS 1159613-25-8)
- 3,5,3’,5’-Tetraiodo Thyroaldehyde-13C6 (CAS 1346601-51-1)
- Darunavir O-β-D-glucuronide, 96% (CAS 1159613-27-0)
- Bambuterol Impurity 9 (CAS CATO-C4X-27469)
- Vincristine EP Impurity H (CAS 865-21-4)
- Afatinib Impurity 39 (CAS 1117-71-1)
- 3-(Dimethoxymethyl)-2-fluoropyridine (CAS 2222511-97-7)
- Vortioxetine Impurity 93 (CAS CATO-C4X-105693)
- Methyl 2-Chloro-4-hydroxybenzoate (CAS 104253-44-3)
- 3-(Bromomethyl)-2,4-dimethylpyridine (CAS 1256562-17-0)
- 6-Hydroxy-2H-naphtho[1,8-bc]furan-2-one (CAS 5656-88-2)
- 6,7-Dichloro-2,4-bis(4-chlorophenyl)phthalazin-1(2H)-one (CAS 672951-09-6)
- (His32,Leu34)-Neuropeptide Y (32-36) (CAS 168916-68-5)
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