Terbutaline Impurity 26 CAS CATO-C4X-118326
| CAS No. | CATO-C4X-118326 |
| Molecular Formula | C19H25NO3 |
| Molecular Weight | 315.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Terbutaline Impurity 26 (CAS CATO-C4X-118326, C19H25NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Terbutaline Impurity 26 (C19H25NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C19H25NO3 |
| Molecular Weight | 315.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Terbutaline Standards
- Terbutaline Impurity 20 (CAS CATO-C4X-118320)
- Terbutaline Impurity 42 (CAS CATO-C4X-118342)
- Terbutaline EP Impurity D (CAS 94109-61-2)
- Terbutaline Impurity 40 (CAS CATO-C4X-118340)
- Terbutaline Impurity 7 (CAS 71324-19-1)
- Terbutaline impurity 114 (CAS CATO-C4X-1183114)
- Terbutaline Impurity 78 (CAS CATO-C4X-118378)
- Terbutaline impurity 133 (CAS CATO-C4X-1183133)
Recommended Standards
- Mitiglinide Impurity 4 (CAS CATO-C4X-11614)
- Dobutamine Impurity 14 (CAS 61413-41-0)
- Mitiglinide Impurity 28 (CAS CATO-C4X-116128)
- Dobutamine Impurity 15 (CAS 334947-74-9)
- Desloratadine Impurity 24 (CAS CATO-C4X-143024)
- Rimegepant Impurity 48 (CAS CATO-C4X-248748)
- Regorafenib Impurity 15 (CAS 1343498-72-5)
- 5,6-Difluoro-2-hydroxy-2,3-dihydro-1H-indene-2-carboxylic acid (CAS 2743483-37-4)
- Paraben Impurity 3 (CAS CATO-C4X-25693)
- 2-Methoxyquinoline-3-carbothioamide (CAS 1340311-88-7)
- 13C34-Fumonisin B1,B2,B3 (CAS CATO-LCFD201134-AL)
- 6-Methylpyridazine-3-carboximidamide acetate (CAS 1609406-73-6)
- 4-(Phenoxymethyl)picolinimidamide hydrochloride (CAS 1373423-24-5)
- Peptide WE-14 (CAS 115136-18-0)
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