Dotinurad Impurity 95 CAS CATO-C4X-249495
| CAS No. | CATO-C4X-249495 |
| Molecular Formula | C21H14ClNO8S |
| Molecular Weight | 475.86 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Dotinurad Impurity 95 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Dotinurad Impurity 95 (CAS CATO-C4X-249495), a pharmacopoeial impurity reference standard (molecular formula C21H14ClNO8S, MW 475.86 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Dotinurad Impurity 95 (C21H14ClNO8S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 475.86 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C21H14ClNO8S |
| Molecular Weight | 475.86 g/mol |
| Purity | ＞90% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dotinurad Standards
- Dotinurad Impurity 21 (CAS CATO-C4X-249421)
- Dotinurad impurity 105 (CAS CATO-C4X-2494105)
- Dotinurad Impurity 71 (CAS CATO-C4X-249471)
- Dotinurad Impurity 73 (CAS CATO-C4X-249473)
- Dotinurad Impurity 37 (CAS CATO-C4X-249437)
- Dotinurad Impurity 149 (CAS CATO-C4X-2494149)
- Dotinurad Impurity 19 (CAS CATO-C4X-249419)
- Dotinurad Impurity 102 (CAS CATO-C4X-2494102)
Recommended Standards
- Diphenyl ((1H-benzo[d][1,2,3]triazol-1-yl)(4-chlorophenyl)methyl)phosphonate (CAS 676562-43-9)
- Metazosulfuron (CAS 868680-84-6)
- 6-Chloro-7-methoxy-2-methyl-3-(4-(4-(trifluoromethoxy)phenoxy)phenyl)quinolin-4(1H)-one (CAS 1354745-52-0)
- 4-[6-(4-Methyl-piperazin-1-yl)-5-trifluoromethyl-pyridin-3-yl]-benzoic acid 4-chloro-phenyl ester (CAS 1311279-90-9)
- Rivaroxaban EP Impurity F (CAS 24065-33-6)
- Rivaroxaban Impurity 54 (CAS CATO-C4X-109054)
- Dotinurad Impurity 68 (CAS 1285573-98-9)
- (2R,3S,4R,5S,6S)-2-(allyloxy)-6-methyltetrahydro-2H-pyran-3,4,5-triol (CAS 41308-77-4)
- 2-{3-oxo-2h,3h-[1,2,4]triazolo[4,3-a]pyridin-2-yl}acetic acid (CAS 941055-65-8)
- Furosemide EP Impurity B (CAS 2736-23-4)
- 2-(Bromomethyl)-3,5-difluoropyridine hydrobromide (CAS 1293388-07-4)
- 1-(4-Benzyloxyphenyl)-5-methyl-2(1H)-pyridone 1076199-02-4 5-Methyl-1-[4-(phenylmethoxy)phenyl]-2(1H)-pyridinone (CAS 1076199-02-4)
- 2-Phenyl-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridine (CAS 929973-74-0)
- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
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