Nifuratel Impurity 33 CAS 859445-34-4
| CAS No. | 859445-34-4 |
| Molecular Formula | C9H9NO7 |
| Molecular Weight | 243.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Nifuratel Impurity 33 (CAS 859445-34-4), a pharmacopoeial impurity reference standard (molecular formula C9H9NO7, MW 243.17 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Nifuratel Impurity 33 (C9H9NO7) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 243.17 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C9H9NO7 |
| Molecular Weight | 243.17 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, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Nifuratel Standards
- Nifuratel Impurity 18 (CAS CATO-C4X-127218)
- Nifuratel Impurity 19 (CAS CATO-C4X-127219)
- Nifuratel Impurity 6 (CAS 41359-15-3)
- Nifuratel Impurity 3 (CAS CATO-C4X-12723)
- Nifuratel Impurity 34 (CAS CATO-C4X-127234)
- Nifuratel impurity 18 (CAS 3455-50-3)
- Nifuratel Impurity 5 (CAS 34143-33-4)
- Nifuratel (CAS 4936-47-4)
Recommended Standards
- Penehyclidine impurity 19 (CAS CATO-C4X-130419)
- 2-((2-Hydroxyethyl)amino)-4,6-dinitrophenol (CAS 99610-72-7)
- Nifuroxazide EP Impurity C (CAS 92-55-7)
- 4-Fluoro-3-(trifluoromethyl)benzenesulfonamide (CAS 1008304-87-7)
- Erlotinib Impurity 59 (CAS CATO-C4X-106959)
- Allopurinol impurity 12 (CAS CATO-C4X-145812)
- Terbutaline Impurity 24 (CAS CATO-C4X-118324)
- Piroctone Olamine (CAS 68890-66-4)
- 1-(5-Methoxy-2-methylpyrimidin-4-yl)ethanone (CAS 1512613-21-6)
- (6-(Ethylamino)pyridin-3-yl)boronic acid (CAS 1313762-00-3)
- (2R,6S)-6-(benzyloxymethyl)-4-(tert-butoxycarbonyl)morpholine-2-carboxylic acid (CAS 1093085-91-6)
- tert-Butyl 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)nicotinate (CAS 1309982-38-4)
- 3-((4-Nitrobenzyl)thio)-4-phenyl-5-(1-phenyl-5-(1H-pyrrol-1-yl)-1H-pyrazol-4-yl)-4H-1,2,4-triazole (CAS 477709-78-7)
- (β-Asp5)-Delta-Sleep Inducing Peptide (CAS 82602-88-8)
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