5-Chloro-6-methyl-2-phenylpyrimidin-4-ol CAS 20551-31-9
| CAS No. | 20551-31-9 |
| Molecular Formula | C11H9ClN2O |
| Molecular Weight | 220.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Chloro-6-methyl-2-phenylpyrimidin-4-ol (CAS 20551-31-9), molecular formula C11H9ClN2O and molecular weight 220.65 g/mol, is a CATO reference standard with documented purity and traceability.
5-Chloro-6-methyl-2-phenylpyrimidin-4-ol (C11H9ClN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
As a certified reference material (CRM), 5-Chloro-6-methyl-2-phenylpyrimidin-4-ol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H9ClN2O |
| Molecular Weight | 220.65 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 1-(3-Chloro-4-(1h-imidazol-1-yl)phenyl)ethan-1-one (CAS 100479-59-2)
- 3-Chloro-6,7,8,9-tetrahydro-5H-pyrido[2,3-b]indol-5-one (CAS 1005498-46-3)
- 1-(2-Chloro-4-(1h-pyrazol-1-yl)phenyl)ethan-1-one (CAS 1022154-85-3)
- 4-Chloro-6-methoxyindole-3-acetonitrile (CAS 110385-66-5)
- 5-(2-Chloro-4-methylphenyl)pyrimidin-2-ol (CAS 1111107-98-2)
- 5-(4-Chloro-3-methylphenyl)pyrimidin-2-ol (CAS 1111108-19-0)
- 5-(3-Chloro-4-methylphenyl)pyrimidin-2-ol (CAS 1111108-44-1)
- 5-(4-Chloro-2-methylphenyl)pyrimidin-2-ol (CAS 1111108-75-8)
Recommended Standards
- 5-Chloro-4-methoxy-2-phenylpyrimidine (CAS 901311-79-3)
- 5-Methyl-1-phenylpyrazole-4-carbonyl chloride (CAS 205113-77-5)
- 5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbaldehyde (CAS 947-95-5)
- 6-(2-Chlorobenzyl)pyridazin-3(2H)-one (CAS 339008-50-3)
- (2Z)-2-[(4-fluorophenyl)imino]-1,3-thiazolidin-4-one (CAS 21262-73-7)
- 3-[(2,2-dimethylpropyl)amino]propanenitrile (CAS 100551-78-8)
- (E)-2-(2-Carbamothioylhydrazono)acetic acid (CAS 763901-34-4)
- N-Ethyl-1H-1,2,4-triazol-5-amine (CAS 89279-89-0)
- 5-Chloro-3-isobutoxybenzofuran-2-carboxylic acid (CAS 1707727-74-9)
- 2-(3-Aminopyrrolidin-1-yl)-3,6-dimethylpyrimidin-4(3H)-one (CAS 1710845-24-1)
- Stampidine, >98% (HPLC) (CAS 217178-62-6)
- 4-(1-Benzofuran-2-yl)aniline (CAS 782-18-3)
- 2-(Pyrrolidin-2-yl)-1-(thiophen-2-yl)propan-1-one (CAS 1500218-70-1)
- Semaglutide impurity 202 (CAS CATO-C4X-2226202)
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