Tizanidine impurity 22 CAS CATO-C4X-144522
| CAS No. | CATO-C4X-144522 |
| Molecular Formula | C11H11N5OS |
| Molecular Weight | 261.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Tizanidine impurity 22 (CAS CATO-C4X-144522, C11H11N5OS) 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, sulfur-containing functionality, a hydroxyl group, an ether linkage, Tizanidine impurity 22 is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 261.30 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C11H11N5OS |
| Molecular Weight | 261.30 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Tizanidine Standards
- Tizanidine Impurity 51 (CAS CATO-C4X-144551)
- Tizanidine EP Impurity D (CAS 560120-68-5)
- Tizanidine-D4 (CAS 1188331-19-2)
- Tizanidine (CAS 51322-75-9)
- Tizanidine impurity 25 (CAS CATO-C4X-144525)
- Tizanidine impurity 31 (CAS CATO-C4X-144531)
- Tizanidine Impurity 41 (CAS CATO-C4X-144541)
- Tizanidine Impurity 42 (CAS CATO-C4X-144542)
Recommended Standards
- 1471AF 2-Methoxy-5-(3-methyl-[1,2,4]triazolo[3,4-b]-[1,3,4]thiadiazol-6-yl)-phenylamine 879058-43-2 C11H11N5OS (CAS 879058-43-2)
- tert-Butyl (tert-butoxycarbonyl)serinate (CAS 1026134-46-2)
- n-Cyclopropyl-4-(3-nitrophenyl)thiazol-2-amine (CAS 923754-18-1)
- [(3-Fluorophenyl)methyl][1-(4-fluorophenyl)propyl]amine (CAS 1039916-93-2)
- Zolmitriptan Impurity 34 HCl (CAS 139264-57-6)
- Glyceryl Trinitrate Solution EP Impurity E (CAS 623-87-0)
- Cefpodoxime Proxetil EP Impurity D (CAS CATO-C4X-157945)
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- 3-Hydroxy-2,2,4-trimethylpentanal (CAS 918-79-6)
- 2-Hydroxy-2-(4-nitrophenyl)propanenitrile (CAS 69813-77-0)
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- Nordihydrocodeine (CAS 845-69-2)
- N-(Isoquinolin-1-yl)acetamide (CAS 51640-00-7)
- 149471-11-4 Neuropeptide DF2 L-Phenylalaninamide, L-alpha-aspartyl-L-arginyl-L-asparaginyl-L-phenylalanyl-L-leucyl-L-arginyl- Asp-arg-asn-phe-leu-arg-phe-NH2 Aspartyl-arginyl-asparaginyl-phenylalanyl-leucyl-arginyl-phenylalaninamide L-alpha-Aspartyl-L-arginyl-L-asparaginyl-L-phenylalanyl-L-leucyl-L-arginyl-L-phenylalaninamide DF(2) Neuropeptide Drnflrfamide (CAS 149471-11-4)
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