Tetrabenazine Impurity 3 CAS 99672-64-7
| CAS No. | 99672-64-7 |
| Molecular Formula | C19H27NO3 |
| Molecular Weight | 317.42 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, Tetrabenazine Impurity 3 (CAS 99672-64-7, C19H27NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Tetrabenazine Impurity 3 (C19H27NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 317.42 g/mol, it falls into the moderately-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 | C19H27NO3 |
| Molecular Weight | 317.42 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
Related Tetrabenazine Standards
- Tetrabenazine Impurity C49 (CAS 1381929-92-5)
- Tetrabenazine Impurity C9 (CAS 718635-93-9)
- Tetrabenazine Related Compound C (CAS 86457-13-8)
- Tetrabenazine (CAS 58-46-8)
- Tetrabenazine Impurity 50( and Enantiomer) (CAS CATO-C4X-274850)
- Tetrabenazine Impurity C298 (CAS 100322-43-8)
- Tetrabenazine Impurity 55-d6 (CAS CATO-C4X-274855)
- Tetrabenazine Metabolite (CAS 924854-60-4)
Recommended Standards
- Ipratropium Bromide EP Impurity E (CAS 22235-81-0)
- 5-(3-Aminothieno[2,3-b]pyridin-2-yl)-4-cyclopentyl-4H-1,2,4-triazole-3-thiol (CAS 1030433-55-6)
- Nateglinide EP Impurity C (CAS CATO-C4X-13209)
- Tert-butyl 2-(1-(cyclopentylimino)-2-phenylethyl)hydrazine-1-carboxylate (CAS 1053657-66-1)
- Mupirocin EP Impurity C Sodium Salt (CAS 85178-60-5)
- Peramivir Impurity 3 (CAS 10335-66-7)
- Tegoprazan Impurity 113 (CAS CATO-C4X-2297113)
- 4-Bromo-2-(trifluoromethyl)thiophene (CAS 1194374-08-7)
- 2-(Chloromethyl)-3-methyl-5-(trifluoromethyl)pyridine (CAS 1393558-04-7)
- 6-Bromo-5-(difluoromethyl)-4-methylnicotinic acid (CAS 1806914-12-4)
- 2-(3-Amino-4-bromo-1h-pyrazol-1-yl)butanenitrile (CAS 1248936-39-1)
- 3-Cyclopropoxy-5-ethylpicolinonitrile (CAS 1243392-83-7)
- 5-Bromo-1-(3-fluorobenzyl)-1H-pyrazole (CAS 1057383-76-2)
- Liraglutide Impurity 15 TFA Salt (CAS CATO-C4X-199215)
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