Hyoscine Butylbromide EP Impurity C Bromide CAS 155-41-9
| CAS No. | 155-41-9 |
| Molecular Formula | C18H24NO4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Hyoscine Butylbromide EP Impurity C Bromide.
CATO supplies Hyoscine Butylbromide EP Impurity C Bromide (CAS 155-41-9), a pharmacopoeial impurity reference standard (molecular formula C18H24NO4Br, MW 398.30 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Hyoscine Butylbromide EP Impurity C Bromide (C18H24NO4Br) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 398.30 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C18H24NO4 Br |
| Molecular Weight | 398.30 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Hyoscine Standards
- Hyoscine Butylbromide EP Impurity E (CAS 14861-14-4)
- Hyoscine EP Impurity C（R-isomer） (CAS 17126-67-9)
- Hyoscine Butylbromide EP Impurity E HCl (CAS 22235-98-9)
- Hyoscine Butylbromide EP Impurity D Bromide (CAS 30269-50-2)
- (2'RS)-Hyoscine Butylbromide (CAS 30269-52-4)
- Hyoscine EP Impurity A (CAS 4684-28-0)
- Hyoscine EP Impurity B (CAS 535-26-2)
- Hyoscine Butylbromide EP Impurity G Bromide (CAS 92714-23-3)
Recommended Standards
- Mesalazine Impurity 29 (CAS 2437-11-8)
- Mosapride Impurity 45 (CAS CATO-C4X-104445)
- Cisatracurium Besilate EP Impurity R DiHCl (CAS CATO-C4X-1850112)
- 3-Butoxy-1λ{6}-thiolane-1,1-dione (CAS 22179-08-4)
- 4-(2,3-Difluorobenzoyl)piperidine (CAS 1388035-56-0)
- Ferulic Acid Impurity 2 (CAS 1014-83-1)
- 2,3-Dimethyl-N-(thiophen-3-ylmethyl)aniline (CAS 1021008-84-3)
- 2-Chloro-5-fluoro-4-(4-methylpiperazin-1-yl)pyrimidine (CAS 385390-91-0)
- 3-aminobicyclo[1.1.1]pentane-1-carbonitrile (CAS 1936643-30-9)
- D-Ala28-Tirzepatide (CAS CATO-CPTD788906)
Why CATO?
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