1-(4-Chlorophenyl)-5-propyl-1H-pyrazole-4-carbonyl chloride CAS 175137-18-5
| CAS No. | 175137-18-5 |
| Molecular Formula | C13H12Cl2N2O |
| Molecular Weight | 283.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 1-(4-Chlorophenyl)-5-propyl-1H-pyrazole-4-carbonyl chloride is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 283.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
1-(4-Chlorophenyl)-5-propyl-1H-pyrazole-4-carbonyl chloride (CAS 175137-18-5), molecular formula C13H12Cl2N2O and molecular weight 283.15 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C13H12Cl2N2O |
| Molecular Weight | 283.15 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.) | 2007 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 3-((4-Chlorophenyl)thio)-1-(thiophen-2-yl)propan-1-one (CAS 320422-69-3)
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- 2-{4-[(2-chlorophenyl)methyl]piperazin-1-yl}acetohydrazide (CAS 893726-31-3)
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Recommended Standards
- {4-[(3,4-dichlorobenzyl)oxy]phenyl}methanol (CAS 175136-14-8)
- (1S,2S)-1,2-Bis(4-chlorophenyl)ethane-1,2-diol (CAS 325811-01-6)
- 4-Chloro-6-(2-chlorophenyl)-2-(1-methoxyethyl)pyrimidine (CAS 1713589-58-2)
- (2-Methyl-5-(piperidin-1-ylsulfonyl)phenyl)boronic acid (CAS 871333-00-5)
- 4-((1H-Imidazol-4-yl)methyl)-1-methylpiperidine dihydrobromide (CAS 817636-54-7)
- Ethyl 6-methyl-4-(4-nitrophenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 161374-08-9)
- 3-Amino-5-(difluoromethyl)-1H-1,2,4-triazole (CAS 461430-01-3)
- Ethyl (E)-3-amino-2-(2-chloroacetyl)but-2-enoate (CAS 78120-39-5)
- 1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-pyrazol-3-amine (CAS 885325-91-7)
- tert-Butyl 5-formyl-octahydrocyclopenta[c]pyrrole-2-carboxylate (CAS 203662-58-2)
- Bis(1,2,2,6,6-pentamethyl-4-piperidyl) Sebacate (CAS 41556-26-7)
- 3-((3-Methoxybenzyl)amino)propan-1-ol (CAS 1042551-39-2)
- 2-(7-Ethoxyquinolin-4-yl)-1-(pyridin-2-yl)ethanone (CAS 676331-51-4)
- [α-Glu](Side Chain)-Semaglutide (CAS CATO-C4X-2226159)
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