3-(2-Methoxyphenyl)-5-methyl-N-(p-tolyl)pyrazolo[1,5-a]pyrimidin-7-amine CAS 890621-43-9
| CAS No. | 890621-43-9 |
| Molecular Formula | C21H20N4O |
| Molecular Weight | 344.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 3-(2-Methoxyphenyl)-5-methyl-N-(p-tolyl)pyrazolo[1,5-a]pyrimidin-7-amine (CAS 890621-43-9), a certified reference material (molecular formula C21H20N4O, MW 344.41 g/mol) for analytical method development and quality control.
The molecular framework of 3-(2-Methoxyphenyl)-5-methyl-N-(p-tolyl)pyrazolo[1,5-a]pyrimidin-7-amine (C21H20N4O) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H20N4O |
| Molecular Weight | 344.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Related Methoxyphenyl Standards
- 2-(4-Methoxyphenyl)-1-[(4-methylphenyl)methoxy]-1H-1,3-benzodiazole (CAS 339009-78-8)
- 4-[6-(4-Methoxyphenyl)pyrazolo[1,5-a]pyrimidin-2-yl]-n,n-dimethylaniline (CAS 893613-37-1)
- N-(5-(4-Methoxyphenyl)-1,3,4-oxadiazol-2-yl)-4-(piperidin-1-yl)butanamide (CAS 89758-33-8)
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- 4-Methoxyphenyl 4-((6-hydroxyhexyl)oxy)benzoate (CAS 137407-31-9)
- 3-(4-Methoxyphenyl)-1-(methylsulfonyl)-5-(p-tolyl)-4,5-dihydro-1H-pyrazole (CAS 384349-48-8)
- 1-((1-(4-Methoxyphenyl)-1H-tetrazol-5-yl)methyl)-3-(thiophen-2-ylmethyl)urea (CAS 941875-62-3)
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Recommended Standards
- 2-Amino-7,7-dimethyl-4-(naphthalen-2-yl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile (CAS 311773-28-1)
- 3-(2-Morpholinoethyl)-3,4,7,12-tetrahydro-1H-[1,2,5]triazepino[1,2-b]phthalazine-1,5(2H)-dione (CAS 81215-78-3)
- 3-(4-Dimethylamino-benzylidene)-2,3-dihydro-1H-cyclopenta[b]quinoline-9-carboxylic acid (CAS 380574-56-1)
- 2-(4-(4-Aminobenzyl)phenyl)-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindole-1,3(2H)-dione (CAS 76079-45-3)
- 1-(3-Fluorobicyclo[1.1.1]pentan-1-yl)ethan-1-one (CAS 262852-00-6)
- 4-Hydroxy-6-(trifluoromethyl)quinoline-3-carbonitrile (CAS 1253420-47-1)
- Methyl 9-oxo-4,5,6,7,8,9-hexahydropyrazolo[1,5-a]pyrido[4,3-d]pyrimidine-3-carboxylate (CAS 1708370-44-8)
- Triethylmethylammonium hydroxide solution (CAS 109334-81-8)
- Guaiacol Rutinoside (CAS 1416253-69-4)
- 2-(3,4-Dichloro-5-(trifluoromethyl)phenyl)acetonitrile (CAS 1824274-76-1)
- 5-[(3-chlorophenyl)methyl]-1,3,4-thiadiazol-2-amine (CAS 39181-49-2)
- 6-Ethoxy-4-hydroxy-1-methylquinolin-2(1H)-one (CAS 83013-77-8)
- Cobicistat Impurity N1 (CAS 1247119-35-2)
- D-Ile12-Tirzepatide (CAS CATO-CPTD788921)
Why CATO?
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