Bambuterol Hydrochloride EP Impurity C CAS 81732-52-7
| CAS No. | 81732-52-7 |
| Molecular Formula | C15H24N2O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Bambuterol Hydrochloride EP Impurity C (CAS 81732-52-7), a pharmacopoeial impurity reference standard (molecular formula C15H24N2O4HCl, MW 332.82 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Bambuterol Hydrochloride EP Impurity C is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 332.82 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), Bambuterol Hydrochloride EP Impurity C 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 | C15H24N2O4 HCl |
| Molecular Weight | 332.82 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Bambuterol Standards
- Bambuterol EP Impurity B (CAS 112935-92-9)
- Bambuterol EP Impurity D (Mixture of Enantiomers) (CAS 112935-93-0)
- Bambuterol EP Impurity F (CAS 112935-94-1)
- Bambuterol-d9 Hydrochloride (CAS 1794810-59-5)
- Bambuterol Hydrochloride EP Impurity F (CAS 2153431-91-3)
- Bambuterol Hydrochloride (CAS 81732-46-9)
- Bambuterol EP Impurity E (CAS 81732-48-1)
- Bambuterol Impurity N1 (CAS 81732-49-2)
Recommended Standards
- Nerandomilast impurity 18 (CAS CATO-C4X-347318)
- Roxadustat Impurity 53 (CAS CATO-C4X-221353)
- Flurbiprofen Impurity 67 (CAS CATO-C4X-144467)
- Methyl 2-(bromomethyl)-3-ethoxybenzoate (CAS 1823327-75-8)
- 1-(2,4-Dichlorophenyl)-n-methylmethanesulfonamide (CAS 955201-13-5)
- 3-(3-Chlorophenyl)-1,4-diazaspiro[4.5]dec-3-ene-2-thione (CAS 1325304-96-8)
- 2-(5-Fluoro-2-methyl-1-(4-(methylsulfinyl)benzylidene)-1H-inden-3-yl)acetic acid (CAS 32004-68-5)
- 7-Hydroxy Coumarin-13C6 Sulfate Potassium Salt (CAS 1189702-86-0)
- (3S,4R)-1-((Benzyloxy)carbonyl)-4-methoxypyrrolidine-3-carboxylic acid (CAS 1269755-30-7)
- Acetyl-Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 2022956-56-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com