3-Chloro-N'-{[5-oxo-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-4-ylidene]methyl}benzohydrazide CAS 338975-57-8
| CAS No. | 338975-57-8 |
| Molecular Formula | C12H8ClF3N4O2 |
| Molecular Weight | 332.67 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-Chloro-N'-{[5-oxo-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-4-ylidene]methyl}benzohydrazide.
3-Chloro-N'-{[5-oxo-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-4-ylidene]methyl}benzohydrazide (CAS 338975-57-8), molecular formula C12H8ClF3N4O2 and molecular weight 332.67 g/mol, is a CATO reference standard with documented purity and traceability.
3-Chloro-N'-{[5-oxo-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-4-ylidene]methyl}benzohydrazide (C12H8ClF3N4O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H8ClF3N4O2 |
| Molecular Weight | 332.67 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 sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 3-Chloro-2-{5-[(1Z)-2-nitroprop-1-en-1-yl]-1H-pyrazol-1-yl}-5-(trifluoromethyl)pyridine (CAS 318248-57-6)
- 4-Chloro-N'-{[5-oxo-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-4-ylidene]methyl}benzohydrazide (CAS 338975-58-9)
- Methyl 4-chloro-6-oxo-1-(3-(trifluoromethyl)phenyl)-1,6-dihydropyridazine-3-carboxylate (CAS 129109-18-8)
- 1823184-19-5 3-chloro-6'-methoxy-5-(trifluoromethyl)-[2,3'-bipyridine]-5'-carboxylic acid KS-000025PS (CAS 1823184-19-5)
- 1-(4-(2-Chloro-6-fluoro-4-(trifluoromethyl)phenoxy)phenyl)ethan-1-one (CAS 914637-09-5)
- 2-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-N-(4-fluorophenyl)acetamide (CAS 672950-14-0)
- Benzyl 2-chloro-5-fluoro-3-(trifluoromethyl)benzoate (CAS 2364585-38-4)
- Ethyl 3-chloro-4-(((trifluoromethyl)sulfonyl)oxy)benzoate (CAS 939050-79-0)
Recommended Standards
- 1-[(4-Chlorophenyl)methyl]-3-nitro-5-(trifluoromethyl)-1,2-dihydropyridin-2-one (CAS 338755-24-1)
- (4-Chlorophenyl)(4-(1,1,2,2-tetrafluoroethoxy)phenyl)methanone (CAS 334931-09-8)
- 1-(3-Chlorobenzyl)-3-nitro-5-(trifluoromethyl)pyridin-2(1H)-one (CAS 339024-88-3)
- 1-(2-(4-Bromo-2-chlorophenoxy)ethyl)-4-methylpiperidine (CAS 401801-85-2)
- Lambda-cyhalothric Acid (CAS 72748-35-7)
- 2,2-Dimethyl-1,3-dioxan-5-amine (CAS 40137-24-4)
- 2-((4-Allyl-5-(pyridin-2-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3,4-difluorophenyl)acetamide (CAS 585559-92-8)
- Benzyl (4-iodopyridin-2-yl)carbamate (CAS 1624261-09-1)
- 6-Methylimidazo[1,2-a]pyrimidine-2-carboxylic acid (CAS 1020034-50-7)
- Methyl 2-amino-5-(aminocarbonyl)-4-methylthiophene-3-carboxylate (CAS 350996-94-0)
- 2-(tert-Butyl)-4-cyclopropoxynicotinaldehyde (CAS 1243465-07-7)
- 5-(Bromomethyl)-2,1,3-benzoxadiazole (CAS 32863-31-3)
- 4-Nitrophenyl β-D-xylopyranoside (CAS 2001-96-9)
- Tirzepatide Impurity 11 TFA salt (CAS CATO-C4X-324011)
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