6-Chloro-5-methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7-ol CAS 189018-17-5
| CAS No. | 189018-17-5 |
| Molecular Formula | C13H10ClN3O |
| Molecular Weight | 259.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 6-Chloro-5-methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7-ol (C13H10ClN3O) 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 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 259.69 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
6-Chloro-5-methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 189018-17-5) is a high-purity analytical reference standard with the molecular formula C13H10ClN3O and a molecular weight of 259.69 g/mol.
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.
CATO manufactures 6-Chloro-5-methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7-ol under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H10ClN3O |
| Molecular Weight | 259.69 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.) | 2011 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 5-(Chloromethyl)-2-phenylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 189018-16-4)
- (6-Chloro-2-(pyridin-2-yl)imidazo[1,2-a]pyridin-3-yl)methanol (CAS 88594-25-6)
- 3-(2-Chloro-5-methoxypyrimidin-4-yl)-1H-indole (CAS 1883594-16-8)
- (E)-2-(3-((4-chlorophenyl)amino)-1-methoxyallylidene)malononitrile (CAS 341966-77-6)
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- rel-(1R,2R,5S,6R)-2-Aminobicyclo[3.1.0]hexane-2,6-dicarboxylic acid (CAS 176027-90-0)
- 4-(3-Methoxyphenyl)pyrrolidine-3-carboxylic acid hydrochloride (CAS 1820581-40-5)
- 5-(Aminomethyl)-1-methylpyridin-2(1H)-one hydrochloride (CAS 1891129-86-4)
- [1,3]Oxathiolo[5,4-d]pyrimidine (CAS 28648-33-1)
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- (E)-4,4-dimethyl-2-pentenoic acid 4,4-dimethyl-2-pentenoic acid 6945-35-3 (CAS 6945-35-3)
- N-Carbamoyl-2,2,2-trifluoroacetamide (CAS 760-41-8)
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