4-Bromo-2-(4-chloro-3-methyl-1h-pyrazol-1-yl)benzaldehyde CAS 1344059-28-4
| CAS No. | 1344059-28-4 |
| Molecular Formula | C11H8BrClN2O |
| Molecular Weight | 299.55 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 4-Bromo-2-(4-chloro-3-methyl-1h-pyrazol-1-yl)benzaldehyde.
4-Bromo-2-(4-chloro-3-methyl-1h-pyrazol-1-yl)benzaldehyde (CAS 1344059-28-4), molecular formula C11H8BrClN2O and molecular weight 299.55 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Bromo-2-(4-chloro-3-methyl-1h-pyrazol-1-yl)benzaldehyde (C11H8BrClN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 299.55 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Bromo-2-(4-chloro-3-methyl-1h-pyrazol-1-yl)benzaldehyde meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H8BrClN2O |
| Molecular Weight | 299.55 g/mol |
| Appearance | Pale yellow to 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
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- 1-(3-Bromo-4-(4-chloro-1h-pyrazol-1-yl)phenyl)ethan-1-one (CAS 1343801-42-2)
- (7-Bromo-4-chloro-1-ethyl-1H-imidazo[4,5-c]pyridin-2-yl)acetonitrile (CAS 842144-05-2)
- 2-Bromo-1-(5-(4-chlorophenyl)furan-2-yl)ethanone (CAS 39170-34-8)
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Recommended Standards
- 3-(Benzyloxy)-5-bromo-2-chloropyrazine (CAS 1410164-69-0)
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- 2-Pentafluoroethyl-3-trifluoromethyl-6-chloropyridine (CAS 1246466-64-7)
- 2-Chloro-4-pentafluoroethyl-5-trifluoromethyl-pyridine (CAS 1208080-41-4)
- (S)-4-(tert-butoxy)-2-((1R,3S)-3-methyl-2,3-dihydro-1H-inden-1-yl)-4-oxobutanoic acid (CAS 2426657-33-0)
- 2-Ethyl-2,5-diazabicyclo[2.2.1]heptane (CAS 845866-61-7)
- (3-Acetyl-5-fluorophenyl)boronic acid (CAS 2002406-01-9)
- Ac-Asp(OtBu)-OH (CAS 117833-18-8)
- 4-Mercapto-3-methoxybenzoic acid (CAS 860562-50-1)
- 3-[(Benzyloxy)methyl]oxetane (CAS 1003013-76-0)
- 3-(2,4-Dimethyl-thiazol-5-yl)-3-oxo-propionic acidmethyl ester (CAS 1083282-21-6)
- 3-Isocyanatopropyl acetate (CAS 908108-71-4)
- tert-Butyl 4-(4-(benzyloxy)benzoyl)piperidine-1-carboxylate (CAS 1415396-19-8)
- Tirzepatide Impurity 45 (CAS CATO-C4X-324045)
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