Pyridoxine Impurity 51 DiHCl CAS CATO-C4X-187751
| CAS No. | CATO-C4X-187751 |
| Molecular Formula | C16H20N2O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Pyridoxine Impurity 51 DiHCl (CAS CATO-C4X-187751, C16H20N2O5HCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Pyridoxine Impurity 51 DiHCl (C16H20N2O5HCl) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Pyridoxine Impurity 51 DiHCl 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 | C16H20N2O5 2*HCl |
| Molecular Weight | 356.80 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Pyridoxine Standards
- Pyridoxine EP Impurity A hydrochloride (CAS 1006-21-9)
- Pyridoxine /Vitamin B6 Impurity 63 HCl (CAS 102694-13-3(free base))
- Pyridoxine dicaprylate (CAS 106483-04-9)
- Pyridoxine N-Oxide HCl (CAS 112507-12-7)
- Pyridoxine Impurity 27 (CAS 116169-14-3)
- Pyridoxine-d3 Hydrochloride (CAS 1189921-12-7)
- Pyridoxine Impurity 6 (CAS 1385767-85-0)
- Pyridoxine Impurity 7 (CAS 1385767-86-1)
Recommended Standards
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- Canagliflozin Impurity 110 (CAS CATO-C4X-1123110)
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- 2-((4-Acetylphenyl)amino)-3-chloronaphthalene-1,4-dione (CAS 130089-98-4)
- Avatrombopag Impurity 32 (CAS 41667-95-2)
- 4-CHloro-6-(pyrrolidin-3-yloxy)pyrimidin-2-amine dihydrochloride (CAS 2109195-06-2)
- N-(4-Bromo-2-(trifluoromethyl)phenyl)-2,2,2-trifluoroacetamide (CAS 218288-13-2)
- 2-[2-(Dimethylamino)ethoxy]benzaldehyde (CAS 15182-06-6)
- 4-(3,6-Dihydro-2h-pyran-4-yl)aniline (CAS 1039053-21-8)
- Semaglutide (CAS 910463-68-2（free base）)
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