Emtricitabine impurity 51 CAS CATO-C4X-123251
| CAS No. | CATO-C4X-123251 |
| Molecular Formula | C17H20F2N6O6S2 |
| Molecular Weight | 506.50 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution, Emtricitabine impurity 51 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 506.50 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a process- or degradation-related impurity, Emtricitabine impurity 51 (CAS CATO-C4X-123251, C17H20F2N6O6S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
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 | C17H20F2N6O6S2 |
| Molecular Weight | 506.50 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Emtricitabine Standards
- Emtricitabine Dimer Impurity (CAS CATO-C4X-123215)
- Emtricitabine impurity 56 (CAS 1962114-95-9)
- Emtricitabine Disulfide (CAS CATO-C4X-123216)
- Emtricitabine Impurity 3 (CAS 2331211-44-8)
- Emtricitabine O-β-D-Glucuronide (CAS 152128-78-4)
- Emtricitabine Impurity 59 (CAS 1422361-25-8)
- Emtricitabine Impurity 16 (CAS 764659-79-2)
- Emtricitabine Menthyl Ester Impurity (CAS 764659-72-5)
Recommended Standards
- Elobixibat Impurity 25 (CAS CATO-C4X-283825)
- ML328 (CAS 634175-34-1)
- 2-[N-[2-(Fmoc-amino)ethyl]-2-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)acetamido]acetic Acid (CAS 169396-92-3)
- Methyl 2-3-6-tri-O-benzoyl-α-D-glucopyranoside (CAS 34234-44-1)
- Isavuconazole Impurity 67 (CAS CATO-C4X-123667)
- Irsogladine Impurity 7 (CAS CATO-C4X-29147)
- 7-TMCA Impurity 1 (CAS CATO-C4X-23181)
- 1-Methoxymethoxy-4-(trifluoromethyl)benzene (CAS 174265-24-8)
- 3-Benzyl-2-(methylthio)pyrimidin-4(3H)-one (CAS 81560-08-9)
- 1-Bromo-3-chloro-5-[chloro(difluoro)methoxy]benzene (CAS 1417567-85-1)
- Roblitinib (CAS 1708971-55-4)
- N-(5-Chloro-2-methoxyphenyl)-2-((1-(2,3-dimethylphenyl)-1H-imidazol-2-yl)thio)acetamide (CAS 851131-72-1)
- 3-{1-[(2,6-dichlorophenyl)methyl]-6-oxo-1,6-dihydropyridin-3-yl}-1-[(pyridin-3-yl)methyl]urea (CAS 338785-03-8)
- Semaglutide impurity 199 (CAS CATO-C4X-2226199)
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