5-Chloro-3-(difluoromethyl)-1-ethyl-1H-pyrazole-4-carbaldehyde CAS 1342201-20-0
| CAS No. | 1342201-20-0 |
| Molecular Formula | C7H7ClF2N2O |
| Molecular Weight | 208.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 5-Chloro-3-(difluoromethyl)-1-ethyl-1H-pyrazole-4-carbaldehyde (CAS 1342201-20-0), a certified reference material (molecular formula C7H7ClF2N2O, MW 208.59 g/mol) for analytical method development and quality control.
The molecular framework of 5-Chloro-3-(difluoromethyl)-1-ethyl-1H-pyrazole-4-carbaldehyde (C7H7ClF2N2O) is characterized by an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H7ClF2N2O |
| Molecular Weight | 208.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- (3-Chloro-4-(difluoromethoxy)phenyl)methanol (CAS 1249809-88-8)
- 1-Chloro-3-(difluoromethoxy)-5-methoxybenzene (CAS 1261449-04-0)
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Recommended Standards
- (4-Chloro-3-(difluoromethoxy)phenyl)methanol (CAS 1427447-85-5)
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- 2-(Aminomethyl)-4-chloro-6-(difluoromethyl)-3-hydroxypyridine (CAS 1804449-63-5)
- 2-(Aminomethyl)-5-chloro-4-(difluoromethyl)-3-hydroxypyridine (CAS 1804449-79-3)
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- 3-Bromo-5-chloroimidazo[1,2-a]pyridine-2-carboxylic acid (CAS 1227955-02-3)
- (S)-2-Amino-2-(3-oxo-2,3-dihydroisoxazol-5-yl)acetic acid (CAS 25690-45-3)
- 6-Methyl-1-(o-tolyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole (CAS 529476-59-3)
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- 1-Ethyl-7-phenyl-1,2,3,4-tetrahydroquinoline (CAS 2288708-68-7)
- 4-[2-(Boc-amino)ethoxy]benzamide (CAS 1256633-40-5)
- Pancreatic Polypeptide (rat) (CAS 90419-12-8)
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