7-hydroxy-4H,5H-pyrazolo[1,5-a]pyrimidin-5-one CAS 57489-70-0
| CAS No. | 57489-70-0 |
| Molecular Formula | C6H11N3O2 |
| Molecular Weight | 157.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H11N3O2, 7-hydroxy-4H,5H-pyrazolo[1,5-a]pyrimidin-5-one 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 157.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
CATO supplies 7-hydroxy-4H,5H-pyrazolo[1,5-a]pyrimidin-5-one (CAS 57489-70-0), a certified reference material (molecular formula C6H11N3O2, MW 157.17 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H11N3O2 |
| Molecular Weight | 157.17 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 3 |
Related hydroxy Standards
- 4-(1-Hydroxy-2-propyn-1-yl)benzonitrile (CAS 1595-70-6)
- 3-Hydroxy-7-azabicyclo[2.2.1]Heptane-1-carboxylic acid (CAS 1822552-93-1)
- 6-Hydroxy-2-benzoxazolinone 6-hydroxybenzo[d]oxazol-2(3H)-one 78213-03-3 (CAS 78213-03-3)
- Hydroxy Tyrosol-d3Discontinued, please see H977002 (CAS 294660-90-5)
- N'-hydroxy-4-methyl-1,3-thiazole-5-carboximidamide (CAS 1006047-46-6)
- 5-Hydroxy-3-methyl-1H-pyrazole-1-carbothioamide (CAS 146120-04-9)
- N'-Hydroxy-2-methylthiazole-4-carboximidamide (CAS 263385-95-1)
- 5-Hydroxy-4-(methylamino)-2-oxo-2,5-dihydro-1H-imidazole-1-carbaldehyde (CAS 134419-31-1)
Recommended Standards
- 7H-Furo[3,2-f]indole (CAS 863993-85-5)
- 7-Isoquinolinecarboxaldehyde (CAS 87087-20-5)
- 7-Formylquinoline (CAS 49573-30-0)
- 7-methyl-1H-1,3-benzodiazole-5-carbonitrile (CAS 952511-71-6)
- Indolin-1-yl(piperidin-4-yl)methanone sulfate (CAS 1185297-96-4)
- 2-azido-1-(4-methoxyphenyl)ethan-1-one (CAS 6595-28-4)
- 1-(2-Ethoxybenzyl)-5-methylindoline-2,3-dione (CAS 620931-31-9)
- 4-(Allyloxy)thiophene-2-carboxylic acid (CAS 1512439-65-4)
- (2S,3S)-Methyl 3-aminobicyclo[2.2.2]octane-2-carboxylate (CAS 1932276-78-2)
- 68973-20-6 3,5-Undecadien-2-one DTXSID7071947 (CAS 68973-20-6)
- Methyl 3-amino-4-methyl-5-(pentyloxy)benzoate (CAS 1429902-94-2)
- Benzyl 3-((2-hydroxyethoxy)methyl)piperidine-1-carboxylate (CAS 934744-59-9)
- (S)-1-(Pyrrolidin-3-yl)piperidine (CAS 917560-78-2)
- Semaglutide Impurity 166 (CAS 1395881-03-4)
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