5-Chloro-1-phenyl-1h-pyrazole-4-carbaldehyde CAS 38405-69-5
| CAS No. | 38405-69-5 |
| Molecular Formula | C10H7ClN2O |
| Molecular Weight | 206.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Chloro-1-phenyl-1h-pyrazole-4-carbaldehyde (CAS 38405-69-5), molecular formula C10H7ClN2O and molecular weight 206.63 g/mol, is a CATO reference standard with documented purity and traceability.
5-Chloro-1-phenyl-1h-pyrazole-4-carbaldehyde (C10H7ClN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C10H7ClN2O |
| Molecular Weight | 206.63 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 1967 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 4-Chloro-1-napthalenecarboxylic Acid (CAS 1013-04-3)
- 6-Chloro-2-(pyridin-2-yl)pyrimidin-4-amine (CAS 1014720-73-0)
- 2-Chloro-6-(1h-imidazol-1-yl)benzaldehyde (CAS 1021240-96-9)
- 2-Chloro-4-(1-imidazolyl)benzaldehyde (CAS 1141669-45-5)
- 4-Chloro-6-methyl-2-(pyrimidin-2-yl)pyrimidine (CAS 1153093-46-9)
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Recommended Standards
- 5-(6-Chloropyridin-3-yl)pyrazin-2-amine (CAS 835876-15-8)
- 5-Chloro-2-naphthoic acid (CAS 56961-89-8)
- 5-(4-Chlorophenyl)pyrimidin-2-ol (CAS 27956-39-4)
- 5-Chloro-2-phenylimidazole-4-carbaldehyde (CAS 60367-52-4)
- 4-Benzyl-3-phenyl-1H-pyrazol-5(4H)-one (CAS 40115-65-9)
- 3-Isopropylbenzo[d][1,2,3]triazin-4(3H)-one (CAS 10001-54-4)
- Ethyl 1-[(4-chlorophenyl)methyl]-4-(4-methoxybenzenesulfonyl)piperidine-4-carboxylate (CAS 866135-91-3)
- (1R,2R,4S)-4-Amino-2-fluorocyclohexan-1-ol (CAS 2711860-19-2)
- Lumateperone Impurity 33 (CAS 2117618-96-7)
- Loratadine Impurity 59 (CAS CATO-C4X-142659)
- 5-Methoxy-1,2,3,4-tetrahydropyrido[3,4-b]pyrazine (CAS 1936245-13-4)
- (S)-Ketoprofen Tromethamine Salt (Dexketoprofen Trometamol) (CAS 156604-79-4)
- 2-(3-Bromo-5-(trifluoromethyl)pyridin-2-yl)ethan-1-amine (CAS 1437390-37-8)
- D-[Asp]9-Semaglutide (CAS CATO-CPTD788631)
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