Z-Leu-Tyr-OH CAS 40908-35-8
| CAS No. | 40908-35-8 |
| Molecular Formula | C23H28N2O6 |
| Molecular Weight | 428.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Z-Leu-Tyr-OH is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Z-Leu-Tyr-OH (CAS 40908-35-8), a certified reference material (molecular formula C23H28N2O6, MW 428.48 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Z-Leu-Tyr-OH is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 428.48 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C23H28N2O6 |
| Molecular Weight | 428.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 2 |
Recommended Standards
- Boc-Phe-Tyr-OH (CAS 66076-38-8)
- Z-Tyr-Leu-OH (CAS 35971-70-1)
- Fluorescent Brightener KS-N (CAS 5242-49-9)
- 8-(4-([1,2,4]Triazolo[1,5-a]pyridin-6-yl)-3-(6-methylpyridin-2-yl)-1H-pyrazol-1-yl)-2-oxaspiro[4.5]decan-1-one (CAS 1097729-66-2)
- 1-Oxaspiro[4.4]Nonan-3-one (CAS 90199-32-9)
- Quinine 1'-Oxide (CAS 54821-44-2)
- Methyl 4-hydroxy-2-methylquinoline-7-carboxylate (CAS 1150618-19-1)
- 5-Chloro-2-methoxynicotinaldehyde (CAS 103058-88-4)
- mPEG7-amine (CAS 170572-38-0)
- Fmoc-Arg(Pbf)-Arg(Pbf)-OH (CAS 1589085-71-1)
- N-(naphthalen-2-yl)-5-oxopyrrolidine-2-carboxamide (CAS 1219381-92-6)
- 2-amino-2-(4-chlorophenyl)acetonitrile hydrochloride (CAS 49704-71-4)
- 1-Hexadecyl-3-methyl-1H-imidazol-3-ium trifluoromethanesulfonate (CAS 404001-54-3)
- Anorexigenic Peptide (CAS 69275-10-1)
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