4-[2-({[(9h-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]benzoic acid CAS 203453-80-9
| CAS No. | 203453-80-9 |
| Molecular Formula | C24H21NO4 |
| Molecular Weight | 387.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-[2-({[(9h-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]benzoic acid (C24H21NO4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 4-[2-({[(9h-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]benzoic acid (CAS 203453-80-9), a certified reference material (molecular formula C24H21NO4, MW 387.43 g/mol) for analytical method development and quality control.
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 | C24H21NO4 |
| Molecular Weight | 387.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Nitrogen Atoms | 1 |
Related h Standards
- 2-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-3,4-dimethylbenzoic acid (CAS 1185302-78-6)
- 2-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-3,5-dimethylbenzoic acid (CAS 1185302-84-4)
- 3-(2-{[(9h-fluoren-9-ylmethoxy)carbonyl]amino}ethyl)benzoic acid (CAS 1339169-33-3)
- 2-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)benzoic acid (CAS 1342267-56-4)
- 5-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2,3-dimethylbenzoic acid (CAS 1342550-92-8)
- 2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(benzyl)amino)acetic acid (CAS 141743-13-7)
- 4-({[(9h-fluoren-9-ylmethoxy)carbonyl](methyl)amino}methyl)benzoic acid (CAS 173690-44-3)
- 3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-phenylpropanoic acid (CAS 180181-93-5)
Recommended Standards
- 4-(Pyren-1-ylmethylene)-2-(p-tolyl)oxazol-5(4H)-one (CAS 71977-24-7)
- 4-HYdroxy-3-(4-methoxy-benzyl)-2-oxo-3,5,7,8-tetrahydro-2h-pyrido[4,3-d]pyrimidine-6-carboxylic acid tert-butyl ester (CAS 2092930-02-2)
- 4-(Pyren-1-ylmethylene)-2-(o-tolyl)oxazol-5(4H)-one (CAS 88351-55-7)
- 4-Isobutoxy-N-(2-(pyridin-4-yl)benzo[d]oxazol-5-yl)benzamide (CAS 6008-38-4)
- 4-(6-Methyl-1H-indol-3-yl)thiazol-2-amine (CAS 370077-70-6)
- 2-Thiophenecarboxylic Acid (CAS 527-72-0)
- 5-Methyl-3-(prop-2-yn-1-yloxy)thiophene-2-carboxylic acid (CAS 1339217-98-9)
- Methyl 7-fluoro-1H-indazole-5-carboxylate (CAS 1427431-00-2)
- 5-Bromo-1H-pyrrole-2-carbaldehyde (CAS 931-34-0)
- Vernakalant Impurity 2 (CAS 795281-99-1)
- 5-(Pentyloxy)-1-phenyl-1H-pyrazole-3-carboxylic acid (CAS 60872-18-6)
- 3-(3-Methyl-1-phenyl-1H-1,2,4-triazol-5-yl)-propanoic acid (CAS 1142209-42-4)
- 2,6-Dimethylthiomorpholine 1,1-dioxide (CAS 89999-99-5)
- D-Ala21-Tirzepatide (CAS CATO-CPTD788913)
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