Fmoc-Dap(bromoacetyl)-OH CAS 1448613-98-6
| CAS No. | 1448613-98-6 |
| Molecular Formula | C20H19BrN2O5 |
| Molecular Weight | 447.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Fmoc-Dap(bromoacetyl)-OH is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Fmoc-Dap(bromoacetyl)-OH (CAS 1448613-98-6), molecular formula C20H19BrN2O5 and molecular weight 447.28 g/mol, is a CATO reference standard with documented purity and traceability.
Fmoc-Dap(bromoacetyl)-OH (C20H19BrN2O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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 | C20H19BrN2O5 |
| Molecular Weight | 447.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Fmoc Standards
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- N-Fmoc-S-(4-methylbenzyl)-L-cysteine (CAS 136050-67-4)
- Fmoc-S-benzyl-DL-homocysteine (CAS 1452573-79-3)
- Fmoc-D-Cys(Mbzl)-OH (CAS 200354-41-2)
- Fmoc-D-Cys-D-Cys-OH (CAS CATO-CPTD788735)
- Fmoc-(R)-3-amino-4-(4-nitro-phenyl)-butyric acid (CAS 269398-78-9)
- Fmoc-4-nitro-L-β-homophenylalanine (CAS 270062-88-9)
Recommended Standards
- 4-Chloro-N-(2-(4-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)piperazin-1-yl)ethyl)benzamide (CAS 338792-82-8)
- 4,6-Bis(3-(trifluoromethoxy)phenoxy)pyrimidin-5-amine (CAS 864371-12-0)
- 3-(4-Bromophenyl)-5-(4-methoxyphenoxy)-[1,2,4]triazolo[4,3-c]quinazoline (CAS 477853-49-9)
- 4-Chloro-2-(3-chlorophenyl)-5-(4-(2-fluorobenzoyl)piperazin-1-yl)pyridazin-3(2H)-one (CAS 477867-40-6)
- 1-(2-((2-Fluorobenzyl)thio)-4,5-dihydro-1H-imidazol-1-yl)-2-phenoxyethan-1-one (CAS 851807-09-5)
- 1,2,4-Trimethylcyclohexane (CAS 2234-75-5)
- N-ethyl-1-phenyl-2-(pyrazin-2-yl)ethan-1-amine hydrochloride (CAS 149928-64-3)
- Ceftazidime Impurity 81 (CAS CATO-C4X-121281)
- 4-((Methylamino)methyl)picolinonitrile (CAS 1060812-20-5)
- Butane-2-sulfinic chloride (CAS 41719-03-3)
- (Z)-5-([1,1'-Biphenyl]-4-ylmethylene)-2-thioxoimidazolidin-4-one (CAS 503065-66-5)
- tert-Butyl spiro[indoline-3,3'-pyrrolidine]-1'-carboxylate (CAS 1251001-95-2)
- Tolvaptan Impurity 77 (CAS CATO-C4X-195577)
- Semaglutide impurity 199 (CAS CATO-C4X-2226199)
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