5-Chloro-2-methylpyrazolo[1,5-a]quinazoline CAS 885525-06-4
| CAS No. | 885525-06-4 |
| Molecular Formula | C11H8ClN3 |
| Molecular Weight | 217.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 5-Chloro-2-methylpyrazolo[1,5-a]quinazoline (CAS 885525-06-4), a certified reference material (molecular formula C11H8ClN3, MW 217.65 g/mol) for analytical method development and quality control.
The molecular framework of 5-Chloro-2-methylpyrazolo[1,5-a]quinazoline (C11H8ClN3) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
As a certified reference material (CRM), 5-Chloro-2-methylpyrazolo[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 | C11H8ClN3 |
| Molecular Weight | 217.65 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 |
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Recommended Standards
- 5-Chloro-2-(phenyldiazenyl)pyridine (CAS 20815-69-4)
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- 6-(2-Chlorophenyl)-3-pyridinecarbaldehyde (CAS 898404-60-9)
- 3-Fluoro-4'-methyl-[1,1'-biphenyl]-4-amine (CAS 893735-45-0)
- t-Butyl 2-iodobenzoate (CAS 110349-26-3)
- 10,11-Dimethoxy-2,3,4,5,7,8,12b,13-octahydro-1H-1,6-diazatetraphen-5-one (CAS 866049-94-7)
- 3-(2-Phenyl-1H-imidazol-1-yl)propanenitrile (CAS 23996-12-5)
- (S)-2,2-dimethyl-3-phenyloxirane (CAS 130365-53-6)
- 3-[4-(thiophen-2-yl)butanamido]benzoic acid (CAS 1016744-14-1)
- 3-[[Amino[bis(2-chloroethyl)amino]phosphinyl]oxy]propanoic Acid Benzyl Ester 3-[[Amino[bis(2-chloroethyl)amino]phosphinyl]oxy]propanoic Acid Phenylmethyl Ester 37979-67-2 Carboxyphosphamide Benzyl Ester (CAS 37979-67-2)
- (R)-1-(3-chloro-5-methylphenyl)propan-1-amine (CAS 1213564-29-4)
- (S)-6-(Benzyloxy)-2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine (CAS 187235-29-6)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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