3-Bromo-5-chloro-4-(2-propynyloxy)benzaldehyde CAS 444059-52-3
| CAS No. | 444059-52-3 |
| Molecular Formula | C10H6BrClO2 |
| Molecular Weight | 273.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Bromo-5-chloro-4-(2-propynyloxy)benzaldehyde.
CATO supplies 3-Bromo-5-chloro-4-(2-propynyloxy)benzaldehyde (CAS 444059-52-3), a certified reference material (molecular formula C10H6BrClO2, MW 273.51 g/mol) for analytical method development and quality control.
3-Bromo-5-chloro-4-(2-propynyloxy)benzaldehyde (C10H6BrClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C10H6BrClO2 |
| Molecular Weight | 273.51 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl/Br-containing |
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Recommended Standards
- 3-Bromo-4-fluorobenzenesulfonyl Chloride (CAS 631912-19-1)
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- 3-Bromo-2-(chloromethyl)-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 87779-01-9)
- 4-Bromo-2-fluorobenzenesulfonyl chloride (CAS 216159-03-4)
- (2R,5S)-Methyl 5-methyl-2,5-dihydrooxazole-2-carboxylate (CAS 496878-24-1)
- 2-(4-(4-Chlorophenyl)thiazol-5-yl)acetic acid (CAS 71013-64-4)
- 5-Amino-3-(methoxymethyl)benzo[d]oxazol-2(3h)-one (CAS 1479692-42-6)
- 5-(Trifluoromethyl)-3,4-dihydroisoquinoline (CAS 1355060-44-4)
- 4-Methoxybenzothiazole-2-carboxylic acid (CAS 3507-48-0)
- 2-Chloro-5-(3-methoxyphenyl)-1-pentene (CAS 1143461-63-5)
- 6-(3-Aminopiperidin-1-yl)-N,N-diethylpyrimidin-4-amine hydrochloride (CAS 1185310-90-0)
- Beta-Tocopherol (CAS 148-03-8)
- 2,2,2-Trifluoro-1-(3-isobutoxy-4-methylphenyl)ethan-1-one (CAS 1443336-89-7)
- Semaglutide impurity 68 (CAS CATO-C4X-222668)
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