Glycopyrronium Bromide impurity 16 CAS 16098-80-9
| CAS No. | 16098-80-9 |
| Molecular Formula | C15H20O3 |
| Molecular Weight | 248.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Glycopyrronium Bromide impurity 16 (CAS 16098-80-9), a pharmacopoeial impurity reference standard (molecular formula C15H20O3, MW 248.32 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Glycopyrronium Bromide impurity 16 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 248.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C15H20O3 |
| Molecular Weight | 248.32 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
Related Glycopyrronium Standards
- Glycopyrronium Bromide EP Impurity L (CAS 64471-47-2)
- Glycopyrronium Bromide EP Impurity L (CAS 19833-96-6)
- Glycopyrronium Bromide Impurity 21 (CAS CATO-C4X-181721)
- Glycopyrronium Bromide impurity 17 (CAS CATO-C4X-181717)
- Glycopyrronium Bromide EP Impurity J (CAS 427-49-6)
- Glycopyrronium Bromide EP Impurity O (CAS 618-88-2)
- Glycopyrronium Bromide Impurity 9 (CAS CATO-C4X-18179)
- Glycopyrronium Bromide EP Impurity K (CAS 3900-93-4)
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