Oseltamivir EP Impurity G（HCl） CAS CATO-C4X-172016
| CAS No. | CATO-C4X-172016 |
| Molecular Formula | C16H28N2O4 |
| 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.
As a process- or degradation-related impurity, Oseltamivir EP Impurity G（HCl） (CAS CATO-C4X-172016, C16H28N2O4HCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Oseltamivir EP Impurity G（HCl） (C16H28N2O4HCl) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C16H28N2O4 HCl |
| Molecular Weight | 348.87 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Oseltamivir Standards
- Oseltamivir Impurity 133 (CAS 10098-40-5)
- Oseltamivir impurity 265 Phosphate (CAS 1035895-88-5)
- Ent-Oseltamivir HCl (CAS 1035895-88-5(Free Base))
- Ent-Oseltamivir Phosphate (CAS 1035895-89-6)
- Oseltamivir Impurity N42 (CAS 1052063-36-1)
- Oseltamivir EP Impurity F HCl（Mixture of Diastereomers） (CAS 1052063-37-2（free base）)
- Oseltamivir-d3 (CAS 1093851-61-6)
- Oseltamivir Hydrochloride D3 (CAS 1093851-61-6(free base))
Recommended Standards
- Itraconazole Impurity 15 (CAS 2508172-07-2)
- Tamsulosin Impurity 51 (CAS CATO-C4X-118751)
- Capivasertib Impurity 35 (CAS CATO-C4X-331235)
- 3-(2-Methylenecyclopropyl)-2-oxopropanoic acid (CAS 5746-24-7)
- 1,3-Dihydro-4-nitro-1,3-dioxo-2H-isoindole-2-acetic acid (CAS 15784-35-7)
- Pregabalin Impurity 25 (CAS CATO-C4X-131225)
- Ethanol, 2-amino-, compd. with .alpha.-(2-cyanoethyl)-.omega.-(nonylsulfophenoxy)poly(oxy-1,2-ethanediyl) (CAS 72845-42-2)
- 2-(Chloromethyl)-n-ethylpyridin-4-amine hydrochloride (CAS 1423031-65-5)
- 1,2,3,4-Tetramethyl-1,2,3,4-cyclobutanetetracarboxylic Dianhydride (CAS 64198-16-9)
- (10-31)Semaglutide (CAS CATO-C4X-2226283)
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