Formoterol EP Impurity G CAS 23239-32-9
| CAS No. | 23239-32-9 |
| Molecular Formula | C10H15NO |
| Molecular Weight | 165.23 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.
Formoterol EP Impurity G (CAS 23239-32-9) is a certified pharmaceutical impurity reference standard with the molecular formula C10H15NO and a molecular weight of 165.23 g/mol.
The molecular framework of Formoterol EP Impurity G (C10H15NO) 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 its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), Formoterol EP Impurity G 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.
Physical & Chemical Properties
| Molecular Formula | C10H15NO |
| Molecular Weight | 165.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
Related Formoterol Standards
- Formoterol Impurity 44 (CAS 58993-79-6)
- Formoterol Impurity 46 (CAS 22331-70-0)
- Formoterol Impurity 48 (CAS 87179-33-7)
- Formoterol Impurity 47 (CAS 70284-07-0)
- Formoterol Impurity 31 (CAS 477552-94-6)
- Formoterol Impurity 19 (CAS 126002-14-0)
- Formoterol impurity 106 (CAS CATO-C4X-1525106)
- Formoterol Impurity 49 (CAS 14367-46-5)
Recommended Standards
- Indobufen Impurity 89 (CAS CATO-C4X-179289)
- Dapoxetine Impurity 98 (CAS CATO-C4X-143998)
- 2-(2-Isopropoxyethyl)pyridine (CAS 70715-19-4)
- Rivastigmine Impurity 45 (CAS 26050-44-2)
- Ionone Impurity 7 (CAS 55732-70-2)
- Travoprost Impurity 15 (CAS 208111-99-3)
- Betacarotene EP Impurity C (CAS CATO-C4X-28153)
- 2-(Benzyloxy)-6-(nitromethyl)benzonitrile (CAS 79966-73-7)
- 5,5-Dimethyl-2-oxocyclohexane-1-carbonitrile (CAS 1480251-29-3)
- 1-(3-Bromopropyl)-2-nitrobenzene (CAS 63307-45-9)
- 2-Amino-N-cyclohexylpropanamide hydrochloride (CAS 34582-45-1)
- 3,3-Dimethyl-1-oxa-6-azaspiro[3.3]heptane 2,2,2-trifluoroacetic acid (CAS 1254036-08-2)
- 1,3-Dimethyl-N-phenyl-5-(3-(trifluoromethyl)phenoxy)-1H-pyrazole-4-carboxamide (CAS 303997-87-7)
- Semaglutide Impurity 128 (CAS 2490269-78-6)
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