Pyridoxine /Vitamin B6 Impurity 34 CAS 4811-03-4
| CAS No. | 4811-03-4 |
| Molecular Formula | C8H11NO2 |
| Molecular Weight | 153.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 153.18 g/mol gives Pyridoxine /Vitamin B6 Impurity 34 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Pyridoxine /Vitamin B6 Impurity 34 (CAS 4811-03-4) is a certified pharmaceutical impurity reference standard with the molecular formula C8H11NO2 and a molecular weight of 153.18 g/mol.
Pyridoxine /Vitamin B6 Impurity 34 (C8H11NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C8H11NO2 |
| Molecular Weight | 153.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Pyridoxine Standards
- Pyridoxine EP Impurity A (CAS 5196-20-3)
- Pyridoxine Impurity 7 (CAS 205321-07-9)
- Pyridoxine /Vitamin B6 Impurity 46 (CAS CATO-C4X-187746)
- Pyridoxine /Vitamin B6 Impurity 64 (CAS 2775363-46-5)
- Pyridoxine impurity 80 (CAS CATO-C4X-187780)
- Pyridoxine Impurity 60 (CAS 5417-35-6)
- Pyridoxine Impurity 5 (CAS 4469-34-5)
- Pyridoxine Impurity 60 (CAS 22464-27-3)
Recommended Standards
- 2-hydroxyethyl-6-hydroxymethylpyridine (CAS CATO-C4X-183851)
- Dopamine (CAS 51-61-6)
- Betahistine Impurity 22 (CAS 49745-42-8)
- Dopamine Impurity 65 (CAS CATO-C4X-190865)
- Besudil Impurity 1 (CAS CATO-C4X-29881)
- Roxadustat Impurity 60 (CAS CATO-C4X-221360)
- Febuxostat impurity 124 (CAS CATO-C4X-1162100)
- Sodium allyl sulfate (CAS 19037-59-3)
- 1,2-Cyclohexanediol,4-(1,1-dimethylethyl)- (CAS 67027-80-9)
- 5-(3-((4-Methylbenzyl)oxy)thiophen-2-yl)-3-(methylthio)-1H-1,2,4-triazole (CAS 339022-51-4)
- 1-(2,6-Diisopropylphenyl)imidazole (CAS 25364-47-0)
- (R)-(1-Benzylpyrrolidin-2-yl)methanamine (CAS 101540-53-8)
- 3-Ethyl-2-methyl-1-phenyl-1H-indole (CAS 918163-14-1)
- [D-His]-Semaglutide B (x TFA Salt) (CAS CATO-C4X-2226117)
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