Nifuratel Impurity 11 CAS 645-12-5
| CAS No. | 645-12-5 |
| Molecular Formula | C5H3NO5 |
| Molecular Weight | 157.08 g/mol |
| 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.
Nifuratel Impurity 11 (CAS 645-12-5) is a certified pharmaceutical impurity reference standard with the molecular formula C5H3NO5 and a molecular weight of 157.08 g/mol.
The molecular framework of Nifuratel Impurity 11 (C5H3NO5) is characterized by a carbohydrate-derived structure, an amide group. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C5H3NO5 |
| Molecular Weight | 157.08 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, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Nifuratel Standards
- Nifuratel Impurity 41 (CAS 15205-69-3)
- Nifuratel Impurity 15 (CAS 31805-83-1)
- Nifuratel Impurity 8 (CAS 25517-72-0)
- Nifuratel Impurity 26 (CAS 2493-04-1)
- Nifuratel Impurity 12 (CAS 65019-14-9)
- Nifuratel Impurity 13 (CAS 57500-49-9)
- Nifuratel Impurity 29 (CAS 698-63-5)
- Nifuratel Impurity 21 (CAS CATO-C4X-127221)
Recommended Standards
- 5-Nitro-1H-Imidazole-2-Carboxylic Acid (CAS 351990-51-7)
- 2-amino-3,3,3-trifluoro-2-methylpropanoic acid (CAS 102210-02-6)
- Violuric Acid (CAS 87-39-8)
- (S)-2-Amino-3,3,3-trifluoro-2-methylpropanoic acid (CAS 102210-03-7)
- Thiamethoxam Impurity 3 (CAS 192439-46-6)
- Olaparib Impurity 44 (CAS CATO-C4X-113544)
- Metaraminol Impurity 13 (CAS 47017-04-9)
- 3-[2-(4-Methoxyphenoxy)ethoxy]aniline (CAS 879074-94-9)
- 4-Methyl-N-(tetrahydro-2h-thiopyran-3-yl)pyridin-3-amine (CAS 1342667-67-7)
- n-Phenyl-4-(pyridin-2-yl)thiazol-2-amine (CAS 315702-76-2)
- 1-Methyl-3-phenyl-5-(phenylthio)-1H-pyrazole-4-carbonitrile (CAS 321998-24-7)
- 1-(3,5-Difluorophenyl)cyclobutanecarbonitrile (CAS 1249471-25-7)
- 3-(Piperidin-4-yl)-3H-imidazo[4,5-b]pyridine (CAS 301220-36-0)
- D-Leu26-Tirzepatide (CAS CATO-CPTD788908)
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