Pyridoxine EP Impurity A CAS 5196-20-3
| CAS No. | 5196-20-3 |
| Molecular Formula | C8H9NO2 |
| Molecular Weight | 151.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Pyridoxine EP Impurity A under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Pyridoxine EP Impurity A (CAS 5196-20-3), a pharmacopoeial impurity reference standard (molecular formula C8H9NO2, MW 151.16 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Pyridoxine EP Impurity A (C8H9NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C8H9NO2 |
| Molecular Weight | 151.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Pyridoxine Standards
- Pyridoxine Impurity 7 (CAS 205321-07-9)
- Pyridoxine /Vitamin B6 Impurity 34 (CAS 4811-03-4)
- 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
- Phthalimide-3,4,5,6-d4 (CAS 60161-31-1)
- 3,5-Dimethyl-1H-pyrrole-2,4-dicarbaldehyde (CAS 2199-61-3)
- Phenyl 2-aminoacetate (CAS 39229-42-0)
- 2-(2-Aminophenyl)acetic acid (CAS 3342-78-7)
- Lefamulinum Impurity 35 (CAS CATO-C4X-304735)
- Rasagiline Impurity 35 (CAS CATO-C4X-191335)
- Lidocaine Impurity 98 (CAS CATO-C4X-167998)
- 2-(4-Fluorophenyl)-2-(1-piperidyl)ethylamine (CAS 876710-67-7)
- 2-Amino-5-bromo-N,N-diethylbenzamide (CAS 1263376-84-6)
- 1-(5-Iodopyridin-2-yl)-cyclobutane carboxylic acid (CAS 1257637-94-7)
- Methyl 3-(4-hydroxyphenyl)-3-(1-oxo-2,3-dihydro-1H-isoindol-2-yl)propanoate (CAS 478249-85-3)
- Lobeline impurity 14 (CAS 6168-88-3)
- 3-(Triisopropoxysilyl)propyl methacrylate (CAS 80750-05-6)
- Biotinyl-Neuropeptide W-23 (human) (CAS 1815618-09-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com