Pyridoxine Impurity 38 CAS CATO-C4X-187738
| CAS No. | CATO-C4X-187738 |
| Molecular Formula | C16H20N2O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Pyridoxine Impurity 38 (CAS CATO-C4X-187738), a pharmacopoeial impurity reference standard (molecular formula C16H20N2O5HCl, MW 356.80 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Pyridoxine Impurity 38 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 356.80 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | 97%+ |
| 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
- Empagliflozin Impurity 13 (CAS CATO-C4X-106513)
- Bilastine impurity 114 (CAS CATO-C4X-2253114)
- Fluocinolone Acetonide Impurity 43 (CAS 3802-45-7)
- 7-Bromo-6-chloro-1-methyl-indazole (CAS 2091616-78-1)
- 7-Chloro-4-methylpyrazolo[1,5-a]pyridine-3-carboxylic acid (CAS 1167055-82-4)
- 5-(Chloromethyl)-1-cyclopropyl-1H-tetrazole (CAS 949980-56-7)
- 1,4,7,10,13-Pentaazacyclopentadecane (CAS 295-64-7)
- 2-Fluoro-N-methyl-4-(trifluoromethyl)aniline (CAS 952152-32-8)
- Ethyl 3-isobutyl-5-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate (CAS 457910-74-6)
- Endo-38a-Pro-Exenatide trifluoroacetate salt (CAS 1678416-95-9)
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