5-Oxo-4,5-dihydropyrazolo[1,5-a]quinazoline-3-carbonitrile CAS 124570-55-4
| CAS No. | 124570-55-4 |
| Molecular Formula | C11H6N4O |
| Molecular Weight | 210.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-Oxo-4,5-dihydropyrazolo[1,5-a]quinazoline-3-carbonitrile under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
5-Oxo-4,5-dihydropyrazolo[1,5-a]quinazoline-3-carbonitrile (CAS 124570-55-4) is a high-purity analytical reference standard with the molecular formula C11H6N4O and a molecular weight of 210.19 g/mol.
Structurally, 5-Oxo-4,5-dihydropyrazolo[1,5-a]quinazoline-3-carbonitrile (C11H6N4O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 210.19 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C11H6N4O |
| Molecular Weight | 210.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | 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.) | 1992 |
| Nitrogen Atoms | 4 |
Related Oxo Standards
- 8-methyl-5,6-dihydropyrazolo[3,4-h]quinazolin-2-amine (CAS 2526004-19-1)
- 2-Phenyl-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one (CAS 1246552-68-0)
- 8-Phenyl-4,9-dihydropyrazolo[1,5-d][1,2,4]triazinone (CAS 135131-00-9)
- 5-Methyl-6,7-dihydropyrazolo[1,5-a]thieno[3,2-e]pyrimidine-3-carbonitrile (CAS 866145-04-2)
- 1,10b-dihydropyrazolo[1,5-c]quinazoline-5-thiol (CAS 59553-09-2)
- 5-Methyl-4,5-dihydropyrazolo[3,4-e][1,2,4]thiadiazin-3(2H)-one 1,1-dioxide (CAS 1708401-57-3)
- 5-Oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 197367-83-2)
- 7-Methyl-1,7-dihydropyrazolo[3,4-c][1,2]thiazin-4(3H)-one 2,2-dioxide (CAS 2137593-81-6)
Recommended Standards
- 4-Cyclopropoxy-2-methoxy-6-nitropyridine (CAS 1243482-09-8)
- 2-Amino-5-methyl-3-nitro-benzoic acid methyl ester (CAS 1248541-72-1)
- 5-Cyclopropoxy-2-methoxy-4-nitropyridine (CAS 1243470-63-4)
- 2-(3-Amino-2-oxopyridin-1(2h)-yl)-N-carbamoylacetamide (CAS 1249023-27-5)
- Antheraxanthin B DiacetateDISCONTINUED (CAS 280743-16-0)
- 443955-61-1 4-Oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-7-sulfonyl chloride MFCD13176389 (CAS 443955-61-1)
- 2-(2-Bromo-4-chlorophenoxy)-2-methylpropanoic acid (CAS 938330-04-2)
- 5-[4-(Methylsulfonyl)phenyl]indoline (CAS 893736-30-6)
- N-(4-((1H-pyrazol-1-yl)methyl)phenyl)acrylamide (CAS 1183249-55-9)
- 2,2'-((2-Hydroxy-5-methyl-1,3-phenylene)bis(methylene))bis(4-methylphenol) (CAS 1620-68-4)
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- Nadifloxacin isomer 2 (CAS 130539-72-9)
- Boc-Cholecystokinin Octapeptide (desulfated) (A-1295.0001) (CAS 25687-34-7)
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