Lesinurad Impurity 18 CAS CATO-C4X-147818
| CAS No. | CATO-C4X-147818 |
| Molecular Formula | C17H13Br2N3O2S |
| Molecular Weight | 483.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO supplies Lesinurad Impurity 18 (CAS CATO-C4X-147818), a certified reference material (molecular formula C17H13Br2N3O2S, MW 483.18 g/mol) for analytical method development and quality control.
Structurally, Lesinurad Impurity 18 (C17H13Br2N3O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution. 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 483.18 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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 | C17H13Br2N3O2S |
| Molecular Weight | 483.18 g/mol |
| Purity | >95% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Lesinurad Standards
- Lesinurad Impurity 9 (CAS CATO-C4X-14789)
- Lesinurad Impurity 10 (CAS 2250243-55-9)
- Lesinurad Impurity 31 (CAS 1533519-99-1)
- lesinurad M4 metabolite (CAS 2129551-55-7)
- Lesinurad Impurity 15 (CAS CATO-C4X-147815)
- Lesinurad Impurity 5 (CAS CATO-C4X-14785)
- Lesinurad Impurity 8 (CAS 1158970-52-5)
- Lesinurad Impurity 10 (CAS 878671-99-9)
Recommended Standards
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- Cytidine-5'-triphosphate (CAS 65-47-4)
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- Mussaendoside S (CAS 165198-41-4)
- 2,4,6-Tris(dimethylaminomethyl)phenol (CAS 90-72-2)
- 5,8-Dichloro-2-(1,1-difluoroethyl)pyrido[2,3-d]pyridazine (CAS 2890563-15-0)
- Ethyl 4-ethoxy-2-(methylthio)-pyrimidine-5-carboxylate (CAS 84923-27-3)
- 2-(Cyclopentyloxy)-5-iodopyridine (CAS 902837-58-5)
- 2-(4-Bromophenyl)-5-(4-nitrophenyl)-1,3,4-oxadiazole (CAS 62507-55-5)
- Sucralose-d6 (CAS 1459161-55-7)
- 2-(Chloromethyl)-3,6,7,8-tetrahydro-4H-cyclopenta[g]quinazolin-4-one (CAS 289687-09-8)
- Semaglutide Impurity 143 (CAS CATO-C4X-2226143)
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