5,7-Dichloro-3-phenylpyrazolo[1,5-a]pyrimidine CAS 99898-62-1
| CAS No. | 99898-62-1 |
| Molecular Formula | C12H7Cl2N3 |
| Molecular Weight | 264.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 264.11 g/mol gives 5,7-Dichloro-3-phenylpyrazolo[1,5-a]pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5,7-Dichloro-3-phenylpyrazolo[1,5-a]pyrimidine (CAS 99898-62-1), a certified reference material (molecular formula C12H7Cl2N3, MW 264.11 g/mol) for analytical method development and quality control.
The molecular framework of 5,7-Dichloro-3-phenylpyrazolo[1,5-a]pyrimidine (C12H7Cl2N3) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C12H7Cl2N3 |
| Molecular Weight | 264.11 g/mol |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
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- 5-chloro-3-(2-chlorophenyl)-2,1-benzisoxazole (CAS 77792-52-0)
- 3-Heptyl-1,4-dimethyl-1h-pyrazol-5-amine (CAS 1152649-41-6)
- Methyl 4-amino-3-((tert-butoxycarbonyl)amino)benzoate (CAS 1298108-48-1)
- Tert-butyl (R)-3-(4-fluorophenyl)piperazine-1-carboxylate (CAS 1228559-51-0)
- Tert-butyl (2S,4S)-4-hydroxy-2-(hydroxymethyl)-4-(trifluoromethyl)pyrrolidine-1-carboxylate (CAS 470482-37-2)
- Nicorandil Impurity 31 (CAS CATO-C4X-190731)
- 3-Methoxy-4-methylbenzoyl chloride (CAS 87808-44-4)
- tert-Butyl 4-(2,4-dioxo-3-propyl-1,2,3,4-tetrahydroquinazolin-6-yl)piperazine-1-carboxylate (CAS 1798518-94-1)
- 5H,10H-benzo[b]1,6-naphthyridin-10-one (CAS 64021-57-4)
- 2-(2-Chloro-6-iodopyridin-4-yl)ethan-1-amine (CAS 1393558-92-3)
- Peptide T (CAS 106362-32-7)
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