1-(4-Chlorophenyl)-3,5-dimethyl-1h-pyrazole-4-carboxylic acid CAS 113808-87-0
| CAS No. | 113808-87-0 |
| Molecular Formula | C12H11ClN2O2 |
| Molecular Weight | 250.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 1-(4-Chlorophenyl)-3,5-dimethyl-1h-pyrazole-4-carboxylic acid (C12H11ClN2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine 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 250.68 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 1-(4-Chlorophenyl)-3,5-dimethyl-1h-pyrazole-4-carboxylic acid (CAS 113808-87-0), a certified reference material (molecular formula C12H11ClN2O2, MW 250.68 g/mol) for analytical method development and quality control.
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 | C12H11ClN2O2 |
| Molecular Weight | 250.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- Ethyl 1-(3-chlorophenyl)-1H-pyrazole-4-carboxylate (CAS 110821-32-4)
- Ethyl 1-(4-chlorophenyl)-1H-pyrazole-4-carboxylate (CAS 110821-33-5)
- 1-(3-Chlorophenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylic acid (CAS 113808-90-5)
- Ethyl 1-(3-chlorophenyl)-1H-imidazole-4-carboxylate (CAS 114067-90-2)
- 1-(4-Chlorophenyl)-5-ethyl-1h-pyrazole-4-carboxylic acid (CAS 1152881-17-8)
- 1-(3-chlorophenyl)-5-ethyl-1H-pyrazole-4-carboxylic acid (CAS 1152882-32-0)
- 1-(2-Chlorophenyl)-5-ethyl-1h-pyrazole-4-carboxylic acid (CAS 1154284-31-7)
- 2-(4-Chlorophenyl)-5-ethyl-1h-imidazole-4-carboxylic acid (CAS 1156729-24-6)
Recommended Standards
- 5-(2-Chloro-4-ethoxyphenyl)pyrimidin-2-ol (CAS 1111113-09-7)
- 3-Chloro-6-(2,4-dimethoxyphenyl)pyridazine (CAS 1105194-90-8)
- 3-Chloro-6-(2,5-dimethoxyphenyl)pyridazine (CAS 1105194-50-0)
- 5-(4-Chlorophenoxy)-1,3-dimethyl-1H-pyrazole-4-carbaldehyde (CAS 109925-13-5)
- 3-Piperidin-2-ylpropan-1-ol 2-(3-Hydroxypropyl)piperidine 24448-89-3 (CAS 24448-89-3)
- 2-[4-(3-methoxyphenyl)-3-methyl-1h-pyrazolo[3,4-b]pyridin-1-yl]acetic acid (CAS 937606-37-6)
- (1-(5-CARBOXYPENTYL)-3,3-DIMETHYL-3H-INDOL-1-IUM-2-YL)METHANIDE HYDROBROMIDE 28489-28-3 4-Fluoro-3-methylpyridine AS04869 (CAS 28489-28-3)
- 2-Bromo-N-(3-(trifluoromethyl)phenyl)butanamide (CAS 3795-33-3)
- 2-(4-Cyclohexylphenyl)-6-fluoro-3-methylquinoline-4-carboxylic acid (CAS 96187-26-7)
- 298690-71-8 4-(3-Fluorophenyl)-4-oxobutanenitrile DTXSID60617178 (CAS 298690-71-8)
- 4-[2-(Dimethylamino)ethoxy]-3-ethoxybenzaldehyde hydrochloride (CAS 87330-20-9)
- 5-Methoxy-N-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]pyridine-2-carboxamide (CAS 2851988-20-8)
- 3-(Dimethylamino)-2-methyl-2-phenylpropanal (CAS 19103-12-9)
- Semaglutide impurity 236 (CAS CATO-C4X-2226236)
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