Dotinurad Impurity 257 CAS CATO-C4X-2494257
| CAS No. | CATO-C4X-2494257 |
| Molecular Formula | C8H7NO3S |
| Molecular Weight | 197.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Dotinurad Impurity 257 (CAS CATO-C4X-2494257) is a certified pharmaceutical impurity reference standard with the molecular formula C8H7NO3S and a molecular weight of 197.21 g/mol.
Based on its molecular formula C8H7NO3S, Dotinurad Impurity 257 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 197.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C8H7NO3S |
| Molecular Weight | 197.21 g/mol |
| 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 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dotinurad Standards
- Dotinurad Impurity 67 (CAS 39884-80-5)
- Dotinurad Impurity 170 (CAS 50910-60-6)
- Dotinurad Impurity 98 (CAS CATO-C4X-249498)
- Dotinurad Impurity 99 (CAS CATO-C4X-249499)
- Dotinurad Impurity 85 (CAS 80547-63-3)
- Dotinurad Impurity 193 (CAS CATO-C4X-2494193)
- Dotinurad Impurity 77 (CAS 35458-33-4)
- Dotinurad Impurity 171 (CAS 50910-59-3)
Recommended Standards
- Ethyl Ethoxycarbonylsulfamate (CAS CATO-C3D-4303)
- Ivosidenib Impurity 3 (CAS CATO-C4X-30273)
- 1060AF 868151-37-5 C10H12FNO2 Dimethylamino-(4-fluoro-phenyl)-acetic acid (CAS 868151-37-5)
- N-(2-fluorophenyl)-2-hydroxy-N-methylpropanamide (CAS 1257227-64-7)
- Roflumilast Impurity 51 (CAS CATO-C4X-108451)
- Iobitridol Impurity 30 (CAS CATO-C4X-317830)
- Alogliptin Impurity 39 (CAS 6297-80-9)
- 4-Fluorotoluene (CAS 352-32-9)
- N-Benzyl-N-methyl-2-(methylamino)acetamidehydrochloride (CAS 1220033-30-6)
- 2-(2-Chloro-4-(1H-pyrrol-1-yl)phenoxy)-5-(trifluoromethyl)pyridine (CAS 338397-70-9)
- 2,2-Methylene Bis(5-chlorophenol) (CAS 1215-74-3)
- 5-Bromo-6-(pyridin-3-yl)pyrimidin-4-ol (CAS 1443288-01-4)
- 2-(2,5-Dimethoxyphenyl)benzo[d]thiazole (CAS 56048-60-3)
- Peptide Impurity 40 (CAS CATO-CPTD788840)
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