Dotinurad Impurity 91 CAS CATO-C4X-249491
| CAS No. | CATO-C4X-249491 |
| Molecular Formula | C28H17Cl3N2O8S2 |
| Molecular Weight | 679.93 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO supplies Dotinurad Impurity 91 (CAS CATO-C4X-249491), a pharmacopoeial impurity reference standard (molecular formula C28H17Cl3N2O8S2, MW 679.93 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Dotinurad Impurity 91 (C28H17Cl3N2O8S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 20.0, corresponding to approximately 20 ring(s) or double-bond equivalent(s). With a molecular weight of 679.93 g/mol, it falls into the high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C28H17Cl3N2O8S2 |
| Molecular Weight | 679.93 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) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Dotinurad Standards
- Dotinurad Impurity 15 (CAS CATO-C4X-249415)
- Dotinurad Impurity 47 (CAS CATO-C4X-249447)
- Dotinurad Impurity 59 (CAS CATO-C4X-249459)
- Dotinurad impurity 111 (CAS CATO-C4X-2494111)
- Dotinurad Impurity 134 (CAS CATO-C4X-2494134)
- Dotinurad Impurity 58 (CAS CATO-C4X-249458)
- Dotinurad Impurity 173 (CAS CATO-C4X-2494173)
- Dotinurad Impurity 155 (CAS CATO-C4X-2494155)
Recommended Standards
- [S(R)]-N-[(S)-[(3-(Benzyloxy)-2-(dicyclohexylphosphino)phenyl]-(1,1'-biphenyl)methyl]-N,2-dimethyl-2-propanesulfinamide (CAS 2622154-86-1)
- Bendamustine USP Related Compound H (CAS 1228551-91-4)
- Saquinavir-d9 (CAS 1356355-11-7)
- C26-Dihydro Ceramide (CAS 182362-38-5)
- Mitoxantrone Impurity 26 (CAS CATO-C4X-103426)
- Apalutamide Impurity 53 (CAS 1805120-01-7)
- Ornidazole Impurity 67 (CAS CATO-C4X-133167)
- Itopride Impurity 23 (CAS CATO-C4X-137723)
- 5-(4-(tert-Butyl)phenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 59812-16-7)
- 1-methyl-3-(methylamino)azepan-2-one hydrochloride (CAS 2059940-37-1)
- (E)-2-(2-(Furan-2-yl)vinyl)-1H-benzo[d]imidazole (CAS 1622917-05-8)
- (4-Amino-2-fluoropyridin-3-yl)methanol (CAS 2411455-50-8)
- methyl 1H-pyrazolo[4,3-b]pyridine-7-carboxylate (CAS 1363381-17-2)
- [2-31]-Semaglutide C (x TFA Salt) (CAS CATO-C4X-2226118)
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