Levocarnitine Impurity 21 CAS CATO-C4X-129221
| CAS No. | CATO-C4X-129221 |
| Molecular Formula | C6H16NO2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Levocarnitine Impurity 21 (CAS CATO-C4X-129221, C6H16NO2Cl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Levocarnitine Impurity 21 (C6H16NO2Cl) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C6H16NO2 Cl |
| Molecular Weight | 169.65 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | -1.0 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Levocarnitine Standards
- Levocarnitine Impurity N13 (CAS 1000018-62-1)
- Levocarnitine Impurity N11 (CAS 101396-87-6)
- Levocarnitine Impurity N29 (CAS 101396-91-2)
- Levocarnitine Impurity N22 (CAS 10457-99-5)
- Levocarnitine Impurity 16 (CAS 105-33-9)
- Levocarnitine impurity 26 (CAS 1116-95-6)
- Levocarnitine Impurity N24 (CAS 112083-63-3)
- Levocarnitine Impurity N16 (CAS 112083-64-4)
Recommended Standards
- Iohexol impurity 38 (CAS 2253945-66-1)
- Sitagliptin Impurity 37 (CAS 486459-98-7)
- Afatinib Impurity 39 (CAS 1117-71-1)
- N-(2-(Dimethylamino)-2-(thiophen-3-yl)ethyl)-2,6-difluorobenzamide (CAS 946373-38-2)
- 3-Thiophenemethanamine,N-methyl-,hydrochloride (1:1) (CAS 1041424-94-5)
- Ethyl 2-((5-(4-fluorophenyl)-3,5-dihydro-1H-thieno[3,4-c]pyrrol-4-yl)amino)-2-oxoacetate (CAS 1172080-99-7)
- [5-(Difluoromethyl)pyridin-2-yl]methanol (CAS 1780886-64-7)
- tert-Butyl 4-{5-cyano-[2,3'-bipyridin]-6-yl}-1,4-diazepane-1-carboxylate (CAS 946385-97-3)
- N-Isopropyl-1-methyl-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxamide (CAS 1358719-49-9)
- Semaglutide Impurity 9 (CAS CATO-C4X-22269)
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