7-Chloro-2-(3,4-dimethoxyphenyl)-6-ethyl-5-methylpyrazolo[1,5-a]pyrimidine CAS 1464091-54-0
| CAS No. | 1464091-54-0 |
| Molecular Formula | C17H18ClN3O2 |
| Molecular Weight | 331.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 7-Chloro-2-(3,4-dimethoxyphenyl)-6-ethyl-5-methylpyrazolo[1,5-a]pyrimidine (C17H18ClN3O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 7-Chloro-2-(3,4-dimethoxyphenyl)-6-ethyl-5-methylpyrazolo[1,5-a]pyrimidine (CAS 1464091-54-0), a certified reference material (molecular formula C17H18ClN3O2, MW 331.80 g/mol) for analytical method development and quality control.
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 | C17H18ClN3O2 |
| Molecular Weight | 331.80 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
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Recommended Standards
- 3-(N-Methyl4-chlorobenzenesulfonamido)thiophene-2-carboxylic acid (CAS 1638612-62-0)
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- (E)-1-(5-(Chloromethyl)-1,2,4-oxadiazol-3-yl)-3-(1,3,3-trimethylindolin-2-ylidene)propan-2-one (CAS 885461-53-0)
- 2-{4-[(3-chlorophenyl)methyl]piperazin-1-yl}pyridine-3-carboxylic acid (CAS 1053960-15-8)
- 2-Amino-3-bromo-6-methylpyrazine (CAS 2166787-89-7)
- 5-(1,3-dioxan-2-yl)-1-methyl-1H-indazol-3-amine (CAS 1373350-39-0)
- Ethyl 1-allyl-3-bromo-1H-pyrazole-4-carboxylate (CAS 1399653-70-3)
- 8-Iodo-2-(methylthio)pyrido[4,3-d]pyrimidin-5(6H)-one (CAS 1562987-77-2)
- 2-(2-Fluorophenyl)cyclopropan-1-amine (CAS 1157555-63-9)
- 3-[(4-methyl-5-sulfanyl-4H-1,2,4-triazol-3-yl)methyl]-1λ⁶-thiolane-1,1-dione (CAS 869716-11-0)
- Bifonazole Impurity 7 (CAS 91487-87-5)
- Methyl 1-([1,1'-biphenyl]-4-carbonyl)-1H-indole-3-carboxylate (CAS 154477-38-0)
- Methyl benzo[d]isothiazole-4-carboxylate (CAS 1378676-29-9)
- Palmitoyl Hexapeptide-12 (CAS 171263-26-6)
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