Fluorescein-6-carbonyl-Leu-Glu(OMe)-His-DL-Asp(OMe)-fluoromethylketone (N-1910.0500) CAS 1926163-67-8
| CAS No. | 1926163-67-8 |
| Molecular Formula | C45H47FN6O14 |
| Molecular Weight | 914.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Fluorescein-6-carbonyl-Leu-Glu(OMe)-His-DL-Asp(OMe)-fluoromethylketone (N-1910.0500) (CAS 1926163-67-8), molecular formula C45H47FN6O14 and molecular weight 914.88 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C45H47FN6O14, Fluorescein-6-carbonyl-Leu-Glu(OMe)-His-DL-Asp(OMe)-fluoromethylketone (N-1910.0500) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 914.88 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C45H47FN6O14 |
| Molecular Weight | 914.88 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 25.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
Related Fluorescein Standards
- Fluorescein-6-carbonyl-Val-Asp(OMe)-Val-Ala-DL-Asp(OMe)-fluoromethylketone (N-1950.1000) (CAS 1926163-70-3)
- Fluorescein-6-carbonyl-Asp(OMe)-Glu(OMe)-Val-DL-Asp(OMe)-fluoromethylketone (CAS 1926163-65-6)
- Fluorescein-PEG6-bis-NHS ester (CAS 2055105-59-2)
- Fluorescein-6-carbonyl-Tyr-Val-Ala-DL-Asp(OMe)-fluoromethylketone (CAS 1926163-69-0)
- Fluorescein mercuric acetate (CAS 3570-80-7)
- FMA-Fluorescein Mercuric Acetate (CAS 32382-27-7)
- Fluorescein-PEG6-NHS ester (CAS 1818294-35-7)
- Fluorescein-dUTP (CAS 214154-36-6)
Recommended Standards
- (11bS,11′bS)-4,4′-[(1R)-[1,1′-Binaphthalene]-2,2′-diylbis(oxy)]bis[dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin] (CAS 752210-44-9)
- Cefpirome Impurity 55 (CAS CATO-C4X-120755)
- N-((11bS)-2,6-Di([1,1'-biphenyl]-4-yl)-4-(((trifluoromethyl)sulfonyl)imino)-4l5-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl)-1,1,1-trifluoromethanesulfonamide (CAS 2757103-46-9)
- Cefazolin Impurity 73 (CAS CATO-C4X-157773)
- 4-(2,6-Dimethyltetrahydro-2H-pyran-4-yl)pyridine 1-oxide (CAS 38272-79-6)
- 6-Cyclopropyl-1-propyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 937597-47-2)
- (S)-2-amino-1-(4-((isopropyl(methyl)amino)methyl)piperidin-1-yl)propan-1-one (CAS 1292746-49-6)
- Topiroxostat Impurity 51 (CAS 98273-47-3)
- N-(5-methylisoxazol-3-yl)-4-thioureidobenzenesulfonamide (CAS 331422-75-4)
- (7,8-Dimethoxy-2-oxo-1,2-dihydro-3H-3-benzazepin-3-yl)acetic acid (CAS 1573547-27-9)
- 3-Methylimidazo[2,1-b][1,3]thiazole-6-carboxylic acid (CAS 57332-88-4)
- 2-(Piperidin-4-yl)thiazole-4-carboxylic acid (CAS 1181645-69-1)
- (1-Methyl-1H-pyrazole-5-carbonyl)glycine (CAS 300834-31-5)
- [Glu]17-Semaglutide (CAS CATO-CPTD788604)
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