4-Oxo-1,4-dihydropyrimido[1,2-b]indazole-2-carboxylic acid CAS 92663-38-2
| CAS No. | 92663-38-2 |
| Molecular Formula | C11H7N3O3 |
| Molecular Weight | 229.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Oxo-1,4-dihydropyrimido[1,2-b]indazole-2-carboxylic acid 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.
CATO supplies 4-Oxo-1,4-dihydropyrimido[1,2-b]indazole-2-carboxylic acid (CAS 92663-38-2), a certified reference material (molecular formula C11H7N3O3, MW 229.19 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H7N3O3, 4-Oxo-1,4-dihydropyrimido[1,2-b]indazole-2-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 229.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C11H7N3O3 |
| Molecular Weight | 229.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 3 |
Related Oxo Standards
- 7-Propyl-1,7-dihydropyrimido[4,5-d]pyrimidine-2,4,7-triamine (CAS 118801-61-9)
- (4-Oxo-1,4-dihydropyrimido[1,2-a]benzimidazol-2-yl)acetic acid (CAS 940980-97-2)
- 2-((1,2-Dihydropyrimido[5,4-e][1,2,4]triazin-5-yl)thio)acetonitrile (CAS 21308-94-1)
- 1,6-Dihydropyrimido[4,5-g]pteridine-2,4,7,9(3H,8H)-tetraone (CAS 116055-86-8)
- 3,4-Dihydropyrimido[2,1-a]isoindol-6(2H)-one (CAS 22641-00-5)
- 7-Methyl-3,4-dihydropyrimido[4,5-d]pyrimidin-2(1H)-one (CAS 66840-33-3)
- 5,6-Dihydropyrimido[5,4-e][1,2,4]triazin-5-ol (CAS 205926-63-2)
- 5,6-Dihydropyrimido[4,5-d]pyrimidin-2-ol (CAS 120267-08-5)
Recommended Standards
- 4-Hydroxy-7-methyl-6-nitroquinoline-3-carbonitrile (CAS 919482-00-1)
- 5-(2-Benzofuryl)isoxazole-3-carboxylic Acid (CAS 5776-98-7)
- 3-Phenyl-2H-oxazolo[3,2-a][1,3,5]triazine-2,4(3H)-dione (CAS 35629-60-8)
- 5-(5-Phenyl-1,3,4-oxadiazol-2-yl)-1,3,4-oxadiazol-2-amine (CAS 99367-63-2)
- 1-(4-(2-Methoxyphenyl)-3-oxo-3,4-dihydropyrazin-2-yl)piperidine-4-carboxylic acid (CAS 1713174-92-5)
- (E)-ethyl 3-nitroacrylate (CAS 5941-50-4)
- 8-Methyl-2,3,4,5-tetrahydropyrido[3,2-f][1,4]oxazepine dihydrochloride (CAS 956431-48-4)
- 5-Oxo-L-prolyl-L-proline (CAS 7652-89-3)
- 1-Bromo-4-(methylsulfonyl)butane (CAS 18225-56-4)
- 1-(Tetrahydro-2H-pyran-4-yl)cyclopropane-1-carboxylic acid (CAS 1447944-17-3)
- 4-Methoxy-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid (CAS 439109-76-9)
- 8-Amino-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylic acid hydrochloride (CAS 1956342-01-0)
- Clascoterone Impurity 2 (CAS CATO-C4X-33312)
- Semaglutide Impurity 138 (CAS CATO-C4X-2226138)
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