Z-Lys-ONp · HCl CAS 2179-15-9
| CAS No. | 2179-15-9 |
| Molecular Formula | C20H23N3O6 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Z-Lys-ONp · HCl is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Z-Lys-ONp · HCl (CAS 2179-15-9), molecular formula C20H23N3O6HCl and molecular weight 437.88 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Z-Lys-ONp · HCl (C20H23N3O6HCl) is characterized by a flavonoid core, an amide 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C20H23N3O6 HCl |
| Molecular Weight | 437.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Recommended Standards
- Dimyristoylphosphatidylglycerol (CAS 61361-72-6)
- 4-Fluoro-N-(4-iodophenyl)benzamide (CAS 326-03-4)
- 2-Chloro-6-methyl-3,3'-bipyridine (CAS 1214338-00-7)
- 5-Iodo-2-(trifluoromethyl)benzaldehyde (CAS 1261827-15-9)
- Ethyl 5-(4-chloro-2-methoxyphenyl)-5-oxopentanoate (CAS 951886-53-6)
- Etrasimod Impurity 30 (CAS 1643579-27-4)
- N-(4-(N,N-dimethylsulfamoyl)phenyl)-4-(pyridin-2-yl)piperazine-1-carboxamide (CAS 692733-02-1)
- 3,3-Dichlorocyclobutan-1-amine hydrochloride (CAS 2126177-37-3)
- 1-(3-(3,4-Dimethoxyphenyl)isoxazol-5-yl)ethanone (CAS 151671-43-1)
- Semaglutide impurity 39 (CAS CATO-C4X-222639)
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