H-Ala-His-Lys-OH CAS 126828-32-8
| CAS No. | 126828-32-8 |
| Molecular Formula | C15H26N6O4 |
| Molecular Weight | 354.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
H-Ala-His-Lys-OH (CAS 126828-32-8) is a high-purity analytical reference standard with the molecular formula C15H26N6O4 and a molecular weight of 354.41 g/mol.
Structurally, H-Ala-His-Lys-OH (C15H26N6O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 354.41 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C15H26N6O4 |
| Molecular Weight | 354.41 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 6 |
Recommended Standards
- (H-Gly-Cys-OH)? (Disulfide bond) (CAS 26798-52-7)
- Ethyl 2-(2-((4-phenoxyphenyl)amino)thiazol-4-yl)acetate (CAS 1024040-00-3)
- Abemaciclib Impurity 28 (CAS CATO-C4X-293728)
- Propargyl-PEG5-Ms (CAS 1036204-62-2)
- 2-Amino-1-(2-naphthyl)-1-ethanol 2-amino-1-(naphthalen-2-yl)ethan-1-ol 4899-26-7 (CAS 4899-26-7)
- 1-Phenoxy-3-(trifluoromethyl)benzene (CAS 330-58-5)
- Benzyl ((S)-1-((S)-2-amino-3-methylbutanoyl)pyrrolidin-3-yl)(isopropyl)carbamate (CAS 1401665-78-8)
- 4-Bromo-6-methyl-2-(trifluoromethyl)pyrimidine (CAS 1100767-01-8)
- Diethyl 7-cyanoindolizine-1,3-dicarboxylate (CAS 853334-06-2)
- Ethyl 5-chloro-1-(p-tolyl)-1H-pyrazole-3-carboxylate (CAS 460331-53-7)
- 2-(4-(3-(3,5-Difluoro-4-methoxyphenyl)prop-2-yn-1-ylidene)piperidin-1-yl)-3-nitropyridine (CAS 1107618-97-2)
- Icatibant Impurity 1 TFA salt (CAS CATO-C4X-23611)
- trans-4-phenylcyclohexyl methanesulfonate (CAS 110458-20-3)
- D-Trp25-Tirzepatide (CAS CATO-CPTD788909)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com