5,7-Dichloropyrazolo[1,5-a]pyrimidine-3-carbonitrile CAS 845895-95-6
| CAS No. | 845895-95-6 |
| Molecular Formula | C7H2Cl2N4 |
| Molecular Weight | 213.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5,7-Dichloropyrazolo[1,5-a]pyrimidine-3-carbonitrile.
5,7-Dichloropyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 845895-95-6) is a high-purity analytical reference standard with the molecular formula C7H2Cl2N4 and a molecular weight of 213.02 g/mol.
5,7-Dichloropyrazolo[1,5-a]pyrimidine-3-carbonitrile (C7H2Cl2N4) contains a nitrile group, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5,7-Dichloropyrazolo[1,5-a]pyrimidine-3-carbonitrile 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 | C7H2Cl2N4 |
| Molecular Weight | 213.02 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Dichloropyrazolo Standards
- 4,6-Dichloropyrazolo[1,5-a]pyridine-3-carbonitrile (CAS 2642164-54-1)
- 2-(5,7-Dichloropyrazolo[1,5-a]pyrimidin-6-yl)acetaldehyde (CAS 1956331-50-2)
- 2-(5,7-Dichloropyrazolo[1,5-a]pyrimidin-6-yl)ethanol (CAS 910214-11-8)
- 2,7-Dichloropyrazolo[1,5-a]pyrimidine (CAS 1211535-91-9)
- 3,7-Dichloropyrazolo[1,5-a]pyrimidine (CAS 1784924-19-1)
- 3,5-Dichloropyrazolo[1,5-a]pyrimidine (CAS 1823383-15-8)
- 4,6-Dichloropyrazolo[1,5-a]pyrazine (CAS 2127110-20-5)
- 5,7-Dichloropyrazolo[1,5-a]pyrimidine (CAS 57489-77-7)
Recommended Standards
- 3-iodo-5-methyl-4H-1,2,4-triazole (CAS 23579-76-2)
- 1N-Hydroxyl-6-bromo-5-azaindole (CAS 1000342-28-8)
- 2-Iodo-n,n-dimethylacetamide (CAS 73664-43-4)
- 2-Amino-5-bromo-[1,2,4]triazolo[1,5-a]pyridine (CAS 1010120-55-4)
- 2-Bromo-5-methoxy-3-nitropyridine (CAS 1805025-96-0)
- 2-(Pyrrolidin-1-yl)-5-(1-tosylpyrrolidin-2-yl)pyridine (CAS 1352542-29-0)
- 1H,2H,3H-thieno[2,3-d]imidazol-2-one (CAS 71309-43-8)
- sodium (1E)-3-(4-methoxyphenyl)-3-oxoprop-1-en-1-olate (CAS 34933-41-0)
- 2-Acetamido-4,6-O-benzylidene-2-deoxy-β-D-glucopyranosyl Azide (CAS 168397-51-1)
- 1-chloro-3,5-ditoluyl-D-deoxyribose (CAS 3601-89-6)
- 4-Amino-N-(6-amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)benzamide (CAS 856571-99-8)
- 7-Bromo-2-methyl-2,3-dihydropyrazolo[5,1-b]oxazole (CAS 2676861-81-5)
- 2-(4-Bromo-5-methylthiophen-2-yl)acetic acid (CAS 57915-33-0)
- Heme iron polypeptide(Hematin) (CAS 14875-96-8)
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