7-(2,4-dichlorophenyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid CAS 1245823-13-5
| CAS No. | 1245823-13-5 |
| Molecular Formula | C13H7Cl2N3O2 |
| Molecular Weight | 308.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 308.12 g/mol gives 7-(2,4-dichlorophenyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
7-(2,4-dichlorophenyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 1245823-13-5) is a high-purity analytical reference standard with the molecular formula C13H7Cl2N3O2 and a molecular weight of 308.12 g/mol.
Based on its molecular formula C13H7Cl2N3O2, 7-(2,4-dichlorophenyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 308.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C13H7Cl2N3O2 |
| Molecular Weight | 308.12 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related dichlorophenyl Standards
- 2-(2,5-Dichlorophenyl)benzo[d]oxazole-5-carboxylic acid (CAS 1232675-55-6)
- 2-(2,6-Dichlorophenyl)-3H-imidazo[4,5-c]pyridine-4-carboxylic acid (CAS 1337881-91-0)
- 2-(2,5-Dichlorophenyl)imidazo[1,2-b]pyridazine-3-carboxylic acid (CAS 1426521-23-4)
- 2-(2,5-Dichlorophenyl)imidazo[1,2-a]pyrazine-3-carboxylic acid (CAS 1426521-25-6)
- 2-(2,5-Dichlorophenyl)imidazo[1,2-a]pyrimidine-3-carboxylic acid (CAS 1426521-27-8)
- 1-(3,4-Dichlorophenyl)-4-(furan-2-carbonyl)-1H-1,2,3-triazole (CAS 866149-80-6)
- 7-(3,5-Dichlorophenyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 676537-47-6)
- 4-(3,4-Dichlorophenyl)thiomorpholine-3,5-dione 1,1-dioxide (CAS 338793-77-4)
Recommended Standards
- Tert-butyl 4-iodo-3-methyl-1H-pyrazole-1-carboxylate (CAS 1269449-59-3)
- 4-(Perfluoroethyl)-3-(trifluoromethyl)benzoic acid (CAS 1208080-71-0)
- tert-Butyl (2,6-dichloro-3-nitropyridin-4-yl)carbamate (CAS 1313726-52-1)
- 6,8-Dichloro-N-(pyridin-4-yl)imidazo-[1,2-b]pyridazine-3-carboxamide (CAS 1177415-93-8)
- 2-(4-(4-Chlorophenyl)thiazol-2-yl)ethan-1-amine hydrochloride (CAS 1177335-53-3)
- 2-((2-Chlorobenzyl)sulfinyl)-N-methyl-N-phenylacetamide (CAS 339108-25-7)
- 3-(3,4-Dimethoxybenzamido)-3-(4-fluorophenyl)propanoic acid (CAS 332052-63-8)
- 2,2,2-Trifluoro-1-(2-phenyl-4,5-dihydro-1H-pyrrol-3-yl)ethanone (CAS 952959-35-2)
- 2-Chloroethyl Acetate (CAS 542-58-5)
- 7-Hydroxy-1-oxo-2,3-dihydro-1H-indene-4-sulfonyl chloride (CAS 75593-62-3)
- 1-Benzyl-3-ethoxypyrrolidine (CAS 46441-02-5)
- 6-Bromo-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (CAS 1391002-43-9)
- 3-Amino-2-(3,4-dichlorobenzyl)propanoic Acid (CAS 682803-15-2)
- Characteristic MSH-Tetrapeptide (CAS 4289-02-5)
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