6,7-Dihydropyrazolo[1,5-a]pyrimidine-4(5H)-carbaldehyde CAS 126352-82-7
| CAS No. | 126352-82-7 |
| Molecular Formula | C7H9N3O |
| Molecular Weight | 151.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6,7-Dihydropyrazolo[1,5-a]pyrimidine-4(5H)-carbaldehyde (C7H9N3O) contains an amide group, a hydroxyl group, an ether linkage, an aromatic ring system. Its physicochemical properties are representative of its class; 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).
6,7-Dihydropyrazolo[1,5-a]pyrimidine-4(5H)-carbaldehyde (CAS 126352-82-7) is a high-purity analytical reference standard with the molecular formula C7H9N3O and a molecular weight of 151.17 g/mol.
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.
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 | C7H9N3O |
| Molecular Weight | 151.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 3 |
Related Dihydropyrazolo Standards
- 2-Methyl-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one (CAS 1301714-05-5)
- 2-methyl-6,7-dihydropyrazolo[1,5-a]pyrimidin-5(4H)-one (CAS 380391-51-5)
- 5,6-dihydropyrazolo[1,5-d][1,2,4]triazine-4,7-dione (CAS 56976-96-6)
- 2-Methyl-6,7-dihydropyrazolo[1,5-a]pyrimidin-5-amine (CAS 868846-31-5)
- 2,3-Dihydropyrazolo[5,1-b]oxazole-6-carboxylic Acid (CAS 1239722-75-8)
- 2,3-Dihydropyrazolo[5,1-b]oxazole-7-carboxylic acid (CAS 1286755-21-2)
- (2-Methyl-2,3-dihydropyrazolo[5,1-b]oxazol-2-yl)methanol (CAS 2894830-79-4)
- 2,3-Dihydropyrazolo[5,1-b]thiazole-6-carbaldehyde (CAS 623565-43-5)
Recommended Standards
- 2-(Ethylamino)pyrimidine-4-carbaldehyde (CAS 1260788-30-4)
- 7-Methyl-2,3-dihydro-1H-imidazo[1,2-b]pyrazole-1-carbaldehyde (CAS 126352-86-1)
- 1,2,3,4-Tetrahydropyrido[2,3-b]pyrazin-6-ol (CAS 1260788-24-6)
- 2-Amino-2-(pyridin-4-yl)acetamide (CAS 1266742-79-3)
- 2-Chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethoxy)aniline (CAS 915402-37-8)
- 3-[3-mercapto-5-(4-methylphenyl)-4H-1,2,4-triazol-4-yl]propanoic acid (CAS 847783-63-5)
- 4-(4-Iodopyrimidin-2-yl)morpholine (CAS 845658-53-9)
- Desmopressin(1-7)-OH·TFA (CAS CATO-C4X-221515)
- (S)-1-Phenyl-2-(pyrrolidin-1-yl)ethanamine dihydrochloride (CAS 1609680-93-4)
- 2',4'-Diaminoacetanilide (CAS 6373-15-5)
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- 3-Fluoro-4-iodo-2-methoxypyridine (CAS 1227595-09-6)
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