Polaprezinc Impurity 21 CAS CATO-C4X-182121
| CAS No. | CATO-C4X-182121 |
| Molecular Formula | C17H16N4O6 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO supplies Polaprezinc Impurity 21 (CAS CATO-C4X-182121), a pharmacopoeial impurity reference standard (molecular formula C17H16N4O6Na, MW 395.33 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Polaprezinc Impurity 21 (C17H16N4O6Na) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 395.33 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C17H16N4O6 2*Na |
| Molecular Weight | 395.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Polaprezinc Standards
- Polaprezinc Impurity 3 (CAS 103646-38-4)
- Polaprezinc (CAS 107667-60-7)
- Polaprezinc Impurity 2 (CAS 17332-34-2)
- Polaprezinc Impurity 12 (CAS 19357-01-8)
- Polaprezinc Impurity 23 (CAS 19532-95-7)
- Polaprezinc impurity 29 (CAS 21032-84-8)
- Polaprezinc Impurity 10 (CAS 3339-73-9)
- Polaprezinc Impurity N1 (CAS 46119-06-6 (free base))
Recommended Standards
- Teriflunomide Impurity 5 (CAS 220512-86-7)
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- 5-bromo-3-methyl-triazole-4-carboxylic acid (CAS 1391631-21-2)
- 2-Fluoro-4-iodo-5-methyl-3-pyridinecarboxaldehyde (CAS 153034-96-9)
- 1-(2-Fluoroethyl)-1h-pyrazol-4-amine (CAS 1427021-88-2)
- Methyl 2-(cyclopent-1-en-1-ylmethyl)-3,3,3-trifluoro-2-(phenylsulfonamido)propanoate (CAS 350818-06-3)
- 2-(Ethoxycarbonyl)-5-fluoro-2,3-dihydro-1H-indene-2-carboxylic acid (CAS 1951439-78-3)
- 6,6-Dimethylbicyclo[3.1.1]heptane-2,4-dione (CAS 872278-48-3)
- Semaglutide impurity 258 (CAS CATO-C4X-2226258)
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