Fudosteine impurity 51 CAS CATO-C4X-144751
| CAS No. | CATO-C4X-144751 |
| Molecular Formula | C13H15N3O2S |
| Molecular Weight | 277.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Fudosteine impurity 51 (CAS CATO-C4X-144751, C13H15N3O2S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Fudosteine impurity 51 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 277.34 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).
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.
Physical & Chemical Properties
| Molecular Formula | C13H15N3O2S |
| Molecular Weight | 277.34 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Fudosteine Standards
- Fudosteine Impurity 56 (CAS CATO-C4X-144756)
- Fudosteine Impurity 57 (CAS CATO-C4X-144757)
- Fudosteine impurity 79 (CAS CATO-C4X-144779)
- Fudosteine Impurity 26 (CAS 50727-79-2)
- Fudosteine Impurity 38 (CAS CATO-C4X-144738)
- Fudosteine Impurity 39 (CAS CATO-C4X-144739)
- Fudosteine Impurity 41 (CAS CATO-C4X-144741)
- Fudosteine Impurity 43 (CAS CATO-C4X-144743)
Recommended Standards
- Fasudil Impurity 43 (CAS 84468-24-6)
- Fluvastatin Impurity 20 (CAS 1025064-18-9)
- Pitavastatin Impurity 97 (CAS 1356998-79-2)
- Phentolamine Impurity 24 (CAS CATO-C4X-224724)
- Ammonium Glycyrrhizate Impurity B (CAS CATO-C4X-25377)
- Ornidazole Impurity 85 (CAS CATO-C4X-133185)
- Fluconazole Impurity 40 (CAS 206050-23-9)
- ((3S,4R)-1-Benzyl-4-phenylpyrrolidin-3-yl)methanol (CAS 221141-89-5)
- 2,3-Difluoro-6-methylbenzamide (CAS 1806332-05-7)
- (S)-3-(4-benzylphenoxy)pyrrolidine hydrochloride (CAS 942194-84-5)
- 1-Benzyl 2-methyl (2R,4R)-4-aminopyrrolidine-1,2-dicarboxylate hydrochloride (CAS 1217457-41-4)
- n-Benzyl-5-methylisoxazole-3-carboxamide (CAS 27144-34-9)
- 4-Fluoro-1H-1,3-benzodiazole-5-carboxylic acid (CAS 1360902-37-9)
- (9-D-Asp) Semaglutide X Sodium salt (CAS CATO-CPTD788617)
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