3-(4-chlorophenyl)-5-methyl-6,7,8,9-tetrahydropyrazolo[1,5-a]quinazoline CAS 866018-13-5
| CAS No. | 866018-13-5 |
| Molecular Formula | C17H16ClN3 |
| Molecular Weight | 297.78 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 3-(4-chlorophenyl)-5-methyl-6,7,8,9-tetrahydropyrazolo[1,5-a]quinazoline.
3-(4-chlorophenyl)-5-methyl-6,7,8,9-tetrahydropyrazolo[1,5-a]quinazoline (CAS 866018-13-5) is a high-purity analytical reference standard with the molecular formula C17H16ClN3 and a molecular weight of 297.78 g/mol.
3-(4-chlorophenyl)-5-methyl-6,7,8,9-tetrahydropyrazolo[1,5-a]quinazoline (C17H16ClN3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 3-(4-chlorophenyl)-5-methyl-6,7,8,9-tetrahydropyrazolo[1,5-a]quinazoline 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 | C17H16ClN3 |
| Molecular Weight | 297.78 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 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related chlorophenyl Standards
- 1-Benzyl-5-(4-chlorophenyl)-2,3-dihydro-4-pyridinone (CAS 1017601-63-6)
- 2-(3-Chlorophenyl)-3-(1,3,4-thiadiazol-2-yl)thiazolidin-4-one (CAS 106145-93-1)
- (2-Chlorophenyl)(4-((2,5-dihydro-1H-pyrrol-1-yl)methyl)phenyl)methanone (CAS 898764-37-9)
- (4-Chlorophenyl)(4-(p-tolyl)-1H-pyrrol-3-yl)methanol (CAS 338413-71-1)
- 4-(4-Chlorophenyl)-3-methyl-1-(o-tolyl)-1H-pyrazol-5-amine (CAS 400074-91-1)
- N-{[3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl]methyl}-N-methylamine (CAS 956261-64-6)
- N1-(2-Chlorophenyl)-N2-(2-(diethylamino)ethyl)oxalamide (CAS 898375-26-3)
- N1-(3-Chlorophenyl)-N2-(2-(diethylamino)ethyl)oxalamide (CAS 898348-41-9)
Recommended Standards
- 3-(4-BOC-piperazino)-2-chloropyridine (CAS 633283-64-4)
- 3-Chloro-3-(3-pyrrolinomethyl) benzophenone (CAS 898790-01-7)
- 2-Chloro-n-[1-(3,4-dihydro-2h-1,5-benzodioxepin-7-yl)-2-methylpropyl]acetamide (CAS 848658-75-3)
- 3-Chloro-4-(3-pyrrolinomethyl) benzophenone (CAS 898764-03-9)
- Alprazolam (CAS 28981-97-7)
- n-(1-(3-Chlorophenyl)ethyl)pivalamide (CAS 1197607-38-7)
- 7-(4-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)butoxy)butoxy)-3,4-dihydroquinolin-2(1H)-one (CAS 1796928-63-6)
- 2-Amino-N-(5-ethyl-1,3,4-thiadiazol-2-yl)benzamide (CAS 887041-88-5)
- 4-Cyclopropylbenzene-1,2-diamine (CAS 1116601-71-8)
- 5-Bromo-2-(3-isopropylphenoxy)aniline (CAS 946665-10-7)
- 9-Methoxybenzo[g]quinoline-5,10-dione (CAS 90381-59-2)
- 1-(4-Methoxyphenyl)-2-(quinolin-2-yl)ethan-1-ol (CAS 94004-77-0)
- N,N-Dimethyl-4-phenoxybutan-1-amine (CAS 40668-79-9)
- (Asn5)-Delta-Sleep Inducing Peptide (H-2555.0005) (CAS 80064-67-1)
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 18665070610 / Nicole.chen@cato-chem.com