Formoterol impurity 126 CAS CATO-C4X-1525126
| CAS No. | CATO-C4X-1525126 |
| Molecular Formula | C15H14BrNO4 |
| Molecular Weight | 352.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 352.18 g/mol gives Formoterol impurity 126 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Formoterol impurity 126 (CAS CATO-C4X-1525126), a pharmacopoeial impurity reference standard (molecular formula C15H14BrNO4, MW 352.18 g/mol) used for the identification and quantification of trace impurities in APIs.
Formoterol impurity 126 (C15H14BrNO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
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 | C15H14BrNO4 |
| Molecular Weight | 352.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Formoterol Standards
- Formoterol impurity 127 (CAS 188690-82-6)
- Formoterol Impurity 54 (CAS 193761-53-4)
- Formoterol-d6(Mixture of Diastereomers) (CAS 1020719-45-2)
- Formoterol Impurity 28 (CAS 201677-59-0)
- Formoterol Impurity 59 (CAS 306966-56-3)
- Formoterol impurity 142 (CAS CATO-C4X-1525142)
- Formoterol Impurity 23 (CAS 43229-01-2)
- Formoterol Impurity 69 (CAS 100865-09-6)
Recommended Standards
- N-((3-Bromopropanoyl)oxy)-2-(quinolin-8-yloxy)acetimidamide (CAS 88758-83-2)
- Methyl 3-(4-bromophenyl)-3-(furan-2-carboxamido)propanoate (CAS 383148-26-3)
- Diethyl 6-bromoquinoline-2,3-dicarboxylate (CAS 892874-36-1)
- Adenosine 5’-Monophosphate-13C5 (CAS CATO-CCFD200542)
- Dexamethasone impurity 122 (CAS CATO-C4X-1165122)
- Lovastatin Impurity 26 (CAS CATO-C4X-168426)
- N-Nitroso Caspofungin Impurity 45 Acetate (CAS CATO-C4X-157545)
- 2-bromohexadecanoic acid (CAS 18263-25-7)
- 4,6-Dichloro-3-(methylthio)-1H-pyrazolo[3,4-d]pyrimidine (CAS 1037479-36-9)
- 2-(3-Chloropyridin-2-yl)acetic acid hydrochloride (CAS 1092477-85-4)
- 2-((4-Chlorophenyl)thio)-N-(2,3-dimethylphenyl)acetamide (CAS 197513-00-1)
- 3-Bromo-2,4,6-trimethylpyridine (CAS 23079-73-4)
- ethyl quinoline-5-carboxylate (CAS 98421-25-1)
- Cholecystokinin Octapeptide (1-5) (desulfated) (CAS 121880-96-4)
Why CATO?
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