H-Phe-Leu-OH CAS 3303-55-7
| CAS No. | 3303-55-7 |
| Molecular Formula | C15H22N2O3 |
| Molecular Weight | 278.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), H-Phe-Leu-OH meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
H-Phe-Leu-OH (CAS 3303-55-7), molecular formula C15H22N2O3 and molecular weight 278.35 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H22N2O3, H-Phe-Leu-OH contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 278.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C15H22N2O3 |
| Molecular Weight | 278.35 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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.) | 1957 |
| Nitrogen Atoms | 2 |
Recommended Standards
- H-Phe-Ile-OH (CAS 22951-94-6)
- Proquazone (CAS 22760-18-5)
- H-Leu-Phe-OH (CAS 3063-05-6)
- Physostigmine-d3 (CAS 1217704-11-4)
- 2-(Chloromethyl)-6-methoxy-1H-benzo[d]imidazole (CAS 14625-40-2)
- (E)-2-Mercapto-5-(2-nitrobenzylidene)thiazol-4(5H)-one (CAS 1784763-14-9)
- 1-(2-Ethoxy-4-methylphenyl)ethan-1-one (CAS 937783-19-2)
- 2-Amino-6-methyl-3-nitrobenzoic acid (CAS 89977-14-0)
- 4-(1-Methyl-6-oxo-1,6-dihydropyridazin-3-yl)benzoic acid (CAS 860013-31-6)
- (5Z)-5-[(5-Chloro-1,3-dimethyl-1H-pyrazol-4-yl)methylidene]-1,3-thiazolidine-2,4-dione (CAS 956244-33-0)
- 1,3,4,6,7,8-hexahydropyrrolo[2,1-c][1,4]oxazin-8a-ylmethanol (CAS 2411419-61-7)
- 2-Aminoacetohydrazide (CAS 14379-80-7)
- 5-(Tetramethyl-1,3,2-dioxaborolan-2-yl)pentanoic acid (CAS 1870019-79-6)
- (Ser(PO?H?)3??·???)-Tau Peptide (379-408) trifluoroacetate salt (CAS 2022956-60-9)
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