Glycopyrronium Bromide EP Impurity B CAS 611-73-4
| CAS No. | 611-73-4 |
| Molecular Formula | C8H6O3 |
| Molecular Weight | 150.13 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Glycopyrronium Bromide EP Impurity B 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.
CATO supplies Glycopyrronium Bromide EP Impurity B (CAS 611-73-4), a pharmacopoeial impurity reference standard (molecular formula C8H6O3, MW 150.13 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Glycopyrronium Bromide EP Impurity B (C8H6O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 150.13 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C8H6O3 |
| Molecular Weight | 150.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Glycopyrronium Standards
- Glycopyrronium Bromide EP Impurity H (CAS 15206-55-0)
- Glycopyrronium Bromide EP Impurity M (CAS 5422-88-8)
- Glycopyrronium Bromide EP Impurity D (CAS 65-85-0)
- Glycopyrronium Bromide impurity 12 (CAS 22065-57-2)
- Glycopyrronium Bromide EP Impurity K (CAS 3900-93-4)
- Glycopyrronium Bromide EP Impurity O (CAS 618-88-2)
- Glycopyrronium Bromide EP Impurity J (CAS 427-49-6)
- Glycopyrronium Bromide Impurity 21 (CAS CATO-C4X-181721)
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- CAS 94908-95-9 (CAS 94908-95-9)
- Cefpirome Impurity 21 (CAS CATO-C4X-120721)
- Crisaborole lmpurity 82 (CAS CATO-C4X-202182)
- 1-(3-Chlorophenyl)-5-methoxy-N-methyl-1H-pyrazole-3-carboxamide (CAS 54708-68-8)
- 2-Octyl-tetradecanoic Acid (CAS 879876-30-9)
- Levofloxacin EP Impurity B (CAS 117707-40-1)
- 2-Chloro-6-methyl-3-nitrophenol (CAS 39183-20-5)
- 2-(3-(3,4-Dimethylphenyl)-1,2,4-oxadiazol-5-yl)benzoic acid (CAS 1707727-20-5)
- Semaglutide (CAS 910463-68-2（free base）)
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