4-Bromo-2,5-bis((2-ethylhexyl)oxy)benzaldehyde CAS 945624-63-5
| CAS No. | 945624-63-5 |
| Molecular Formula | C23H37BrO3 |
| Molecular Weight | 441.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Bromo-2,5-bis((2-ethylhexyl)oxy)benzaldehyde is closely related to a steroid core, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Bromo-2,5-bis((2-ethylhexyl)oxy)benzaldehyde (CAS 945624-63-5), molecular formula C23H37BrO3 and molecular weight 441.44 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Bromo-2,5-bis((2-ethylhexyl)oxy)benzaldehyde (C23H37BrO3) is characterized by a steroid core, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C23H37BrO3 |
| Molecular Weight | 441.44 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
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Recommended Standards
- 3'-O-Benzoyl-2'-deoxy-N2-isobutyrylguanosine, 98% (CAS 63660-23-1)
- N-(9-((2R,3R,4R,5R)-4-Hydroxy-5-(hydroxymethyl)-3-(((R)-tetrahydrofuran-2-yl)oxy)tetrahydrofuran-2-yl)-9H-purin-6-yl)benzamide (CAS 87865-88-1)
- (E)-N-(4-methoxybenzyl)-3-(3-((4-(trifluoromethyl)benzyl)oxy)phenyl)acrylamide (CAS 866151-71-5)
- N-(9-((2R,3R,4R,5R)-4-Hydroxy-5-(hydroxymethyl)-3-(((S)-tetrahydrofuran-2-yl)oxy)tetrahydrofuran-2-yl)-9H-purin-6-yl)benzamide (CAS 87872-85-3)
- Methyl 4,6-dichloro-5-nitronicotinate (CAS 89247-05-2)
- (R)-2-(1-Aminoethyl)-5-methyloxazole-4-carboxylic acid (CAS 312958-46-6)
- 5,6-Dichloroisoindoline (CAS 15997-90-7)
- 3-endo-Aminobicyclo[2.2.1]hept-5-ene-2-carboxylic acid (CAS 88330-29-4)
- Penehyclidine Impurity 8 (CAS CATO-C4X-13048)
- Sulfuric acid compound with 4-methylpiperidine-1-carboximidamide (1:1) (CAS 1078161-67-7)
- 4-(Tert-butyl)thiazole-2-carbaldehyde (CAS 211942-98-2)
- Ethyl 2-aminocyclopentanecarboxylate (CAS 38052-23-2)
- Methyl 2-amino-3-(2,6-dioxopiperidin-1-yl)butanoate (CAS 1706428-35-4)
- Tirzepatide Impurity 47 (CAS CATO-C4X-324047)
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