Tandospirone Impurity 16 CAS CATO-C4X-187516
| CAS No. | CATO-C4X-187516 |
| Molecular Formula | C30H44N4O4 |
| Molecular Weight | 524.69 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Tandospirone Impurity 16 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Tandospirone Impurity 16 (CAS CATO-C4X-187516), a pharmacopoeial impurity reference standard (molecular formula C30H44N4O4, MW 524.69 g/mol) used for the identification and quantification of trace impurities in APIs.
Tandospirone Impurity 16 (C30H44N4O4) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C30H44N4O4 |
| Molecular Weight | 524.69 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Tandospirone Standards
- Tandospirone Impurity 14 (CAS CATO-C4X-187514)
- Tandospirone N-Oxide Impurity 13 (CAS CATO-C4X-187513)
- Tandospirone N-Oxide Impurity 12 (CAS CATO-C4X-187515)
- Tandospirone-d8 (CAS 1794835-73-6)
- Tandospirone Impurity 7 (CAS CATO-C4X-18757)
- Tandospirone (CAS 87760-53-0)
- Tandospirone Impurity 2 (CAS CATO-C4X-18752)
- Tandospirone Impurity 4 (CAS CATO-C4X-18754)
Recommended Standards
- 5-(3-((tert-Butyldimethylsilyl)oxy)-2,2-dimethylpropyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole (CAS 2057515-07-6)
- Olanzapine Impurity 30 (CAS CATO-C4X-117830)
- 3-(3-((tert-Butyldimethylsilyl)oxy)-2,2-dimethylpropyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole (CAS 2057515-03-2)
- Olanzapine Impurity 45 (CAS 2585173-71-1)
- Regadenoson Impurity 47 (CAS CATO-C4X-198547)
- Lercanidipine Impurity 3 HCl (CAS 1797124-83-4(Free Base))
- Favipiravir Impurity 21 (CAS CATO-C4X-210221)
- Phenoxybenzamine EP Impurity A (CAS 902273-13-6)
- N-(2-Aminoethyl)formamide (CAS 69219-13-2)
- 3-Nitro-7-(trifluoromethyl)-1H-pyrrolo[3,2-b]pyridine (CAS 1190319-43-7)
- Diethyleneglycoldistearate (CAS 109-30-8)
- 1-(4-Ethoxyphenyl)propan-1-one (CAS 35031-72-2)
- Tirofiban Impurity 117 (CAS CATO-C4X-1254117)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
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