H-Ala-Leu-Tyr-Leu-bNA (K-1065.0050) CAS 201985-44-6
| CAS No. | 201985-44-6 |
| Molecular Formula | C34H45N5O5 |
| Molecular Weight | 603.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
H-Ala-Leu-Tyr-Leu-bNA (K-1065.0050) (CAS 201985-44-6), molecular formula C34H45N5O5 and molecular weight 603.75 g/mol, is a CATO reference standard with documented purity and traceability.
H-Ala-Leu-Tyr-Leu-bNA (K-1065.0050) (C34H45N5O5) contains a nitrogen-containing heterocyclic scaffold, 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. 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 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 | C34H45N5O5 |
| Molecular Weight | 603.75 g/mol |
| Purity | 97%+ |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Nitrogen Atoms | 5 |
Recommended Standards
- [S(S)]-N-[(R)-[5-(Diphenylphosphino)-9,9-dimethyl-9H-xanthen-4-yl]phenylmethyl]-2-methyl-2-propanesulfinamide (CAS 2162939-88-8)
- N-((S)-(2-(Diphenylphosphino)-5-((4-vinylbenzyl)oxy)phenyl)(phenyl)methyl)-2-methylpropane-2-sulfinamide (CAS 2458268-79-4)
- [S(R)]-N-[(S)-(phenyl)[5-(Diphenylphosphino)-9,9-dimethyl-9H-xanthen-4-yl](phenyl)methyl]-2-methyl-2-propanesulfinamide (CAS 2162939-87-7)
- Palbociclib Impurity 10 (CAS CATO-C3D-1457)
- 5-(Chloromethyl)-1-(oxan-4-yl)-1h-1,2,3,4-tetrazole (CAS 1340126-75-1)
- tert-Butyl 7-bromo-2-chloro-5H-pyrrolo[3,2-d]pyrimidine-5-carboxylate (CAS 1935579-25-1)
- 3-Methyl-5-(perfluorophenyl)-1-phenyl-1H-pyrazole (CAS 1261810-93-8)
- 4-Bromo-N-(3,5-dichlorophenyl)benzamide (CAS 314285-28-4)
- 6-Fluoro-8-methyl-1,2,3,4-tetrahydroquinolin-4-one (CAS 1388041-21-1)
- 1-Allyl-4-(3-chlorophenyl)-1H-imidazol-5-amine (CAS 1250736-95-8)
- 2-Ethyl-5-oxo-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidine-6-carboxylic acid (CAS 446829-83-0)
- 4-(6-Formylpyridin-2-yl)benzonitrile (CAS 834884-79-6)
- Orforglipron Impurity 41 (CAS CATO-C4X-323441)
- Semaglutide impurity 46 (CAS CATO-C4X-222646)
Why CATO?
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