Bambuterol EP Impurity C (Mixture of Enantiomers) CAS 81732-67-4
| CAS No. | 81732-67-4 |
| Molecular Formula | C15H24N2O4 |
| Molecular Weight | 296.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Bambuterol EP Impurity C (Mixture of Enantiomers) (CAS 81732-67-4) is a certified pharmaceutical impurity reference standard with the molecular formula C15H24N2O4 and a molecular weight of 296.36 g/mol.
The molecular framework of Bambuterol EP Impurity C (Mixture of Enantiomers) (C15H24N2O4) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C15H24N2O4 |
| Molecular Weight | 296.36 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 2 |
Related Bambuterol Standards
- Bambuterol EP Impurity D (Mixture of Enantiomers) (CAS 112935-93-0)
- Bambuterol EP Impurity E (CAS 81732-48-1)
- Bambuterol Impurity 12 (CAS CATO-C4X-274612)
- Bambuterol Impurity 5 (CAS CATO-C4X-27465)
- Bambuterol EP Impurity B (CAS 112935-92-9)
- Bambuterol Impurity 3 (CAS CATO-C4X-27463)
- Bambuterol Impurity 4 (CAS CATO-C4X-27464)
- Bambuterol EP Impurity F (CAS 112935-94-1)
Recommended Standards
- 8-(1,1-Dimethylpropyl)-2,4-dioxo-1,3-diazaspiro[4.5]decane-3-acetic acid (CAS 851170-86-0)
- Benzyl 2-phenylpiperazine-1-carboxylate (CAS 912763-14-5)
- 7,8,8-Trimethyl-1-phenyl-4,5,6,7-tetrahydro-1H-4,7-methanoindazole-3-carboxylic acid (CAS 326021-49-2)
- Benzyl 3-phenylpiperazine-1-carboxylate (CAS 912763-24-7)
- Atorvastatin Impurity 70 (CAS 1217751-95-5)
- Oclacitinib Impurity 29 (CAS CATO-C4X-301829)
- Opicapone impurity 35 (CAS 1443319-15-0)
- 3,5-Bis-pentafluoroethyl-1h-pyridine-4-thione (CAS 1286743-91-6)
- 2-((3,4-Dimethylbenzyl)amino)butan-1-ol (CAS 1152684-10-0)
- 2-(4-(4-Amino-6-chloro-1,3,5-triazin-2-yl)piperazin-1-yl)ethan-1-ol (CAS 1220016-94-3)
- 2-(7-Bromo-1H-indazol-3-yl)acetic acid (CAS 944899-28-9)
- 4-Isopropoxy-2-phenyl-2-(trifluoromethyl)oxazol-5(2H)-one (CAS 124292-93-9)
- H-Tyr-OMe · HCl (CAS 3417-91-2)
- Pancreatic Polypeptide (31-36), amide, human (CAS 74012-13-8)
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