3,5-Dichloro-2-methylpyrazolo[1,5-a]quinazoline CAS 871673-26-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 871673-26-6 |
| Molecular Formula | C11H7Cl2N3 |
| Molecular Weight | 252.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Dichloro-2-methylpyrazolo[1,5-a]quinazoline (CAS 871673-26-6) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C11H7Cl2N3. Molecular weight: 252.10 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C11H7Cl2N3 |
| Molecular Weight | 252.10 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichloro Standards
- 2,8-Dichloro-10H-phenoxazine (CAS 5383-03-9)
- 4,6-Dichloro-2-(methylthio)pyrimidine-5-carbohydrazide (CAS 1062654-24-3)
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- 6,9-Dichloro-1,2,3,4-tetrahydroacridine (CAS 5396-25-8)
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Recommended Standards
- 3-(2,4-Dichlorobenzoyl)pyridine (CAS 62247-01-2)
- 3-iodo-4,5,6,7-tetrahydro-1H-indazole (CAS 945925-78-0)
- 3-Nitro-6-oxo-5-(trifluoromethyl)-1,6-dihydropyridine-2-carboxylic acid (CAS 2761296-39-1)
- (Deamino-Cys1,D-Arg8)-Vasopressin (CAS 16679-58-6)
- 1-Isobutyl-7-methoxy-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole (CAS 175975-76-5)
- 2-(Piperidin-1-yl)pyridin-4-amine (CAS 35980-78-0)
- Methyl 3-(2,5-dioxopyrrolidin-1-yl)-2-methyl-2-(methylamino)propanoate (CAS 1250213-00-3)
- 3-(3-chlorophenoxy)-2-butanone (CAS 27044-53-7)
- 11α-Hydroxy Progesterone (CAS 80-75-1)
- Semaglutide impurity 272 (CAS CATO-C4X-2226272)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com