7-Hydroxypyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-6(7H)-one CAS 1210768-40-3
| CAS No. | 1210768-40-3 |
| Molecular Formula | C9H6N4O2 |
| Molecular Weight | 202.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Hydroxypyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-6(7H)-one (C9H6N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
7-Hydroxypyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-6(7H)-one (CAS 1210768-40-3), molecular formula C9H6N4O2 and molecular weight 202.17 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C9H6N4O2 |
| Molecular Weight | 202.17 g/mol |
| Appearance | Pale yellow to 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 4 |
Related Hydroxypyrazolo Standards
- 7-Hydroxypyrazolo[5,1-c]pyrido[4,3-e][1,2,4]-triazin-6(7H)-one (CAS 1211170-88-5)
- Ethyl 5-hydroxypyrazolo[1,5-a]pyridine-3-carboxylate (CAS 1396762-13-2)
- Ethyl 6-hydroxypyrazolo[1,5-a]pyridine-3-carboxylate (CAS 1396762-29-0)
- Ethyl 4-hydroxypyrazolo[1,5-a]pyridine-3-carboxylate (CAS 55899-22-4)
- Ethyl 5-hydroxypyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 1026456-01-8)
- 7-Ethyl-2-hydroxypyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 1049873-68-8)
- Ethyl 7-hydroxypyrazolo[1,5-a]pyrimidine-5-carboxylate (CAS 672325-14-3)
- Ethyl 7-hydroxypyrazolo[1,5-a]pyrimidine-6-carboxylate (CAS 43024-61-9)
Recommended Standards
- 4-(Trifluoromethyl)-2,3-dihydro-1H-inden-1-ol (CAS 1202577-87-4)
- 4,4,4-Trifluoro-1-phenylbutan-2-one (CAS 121194-37-4)
- (S)-4-(Trifluoromethyl)-2,3-dihydro-1H-inden-1-ol (CAS 1202577-82-9)
- 1-(2,6-Dimethylphenyl)-2,2,2-trifluoroethan-1-one (CAS 121456-63-1)
- 4-Sulfamoylbenzoyl chloride (CAS 51594-97-9)
- 4-amino-1-(4-fluorophenyl)pyrrolidin-2-one (CAS 1011357-90-6)
- 5-(2-Fluorophenyl)-4-((thiophen-2-ylmethylene)amino)-4H-1,2,4-triazole-3-thiol (CAS 578698-26-7)
- 8-Fluoro-4,5-dihydro-1H-azepino[5,4,3-cd]indol-6(3H)-one (CAS 1408282-26-7)
- 1-(2,2,2-Trifluoroethyl)-1H-pyrazole-3-carboxylic acid (CAS 942853-22-7)
- (S)-2-Amino-N-cyclopropyl-N-(2-iodobenzyl)propanamide (CAS 1353995-18-2)
- Caroverine hydrochloride (CAS 55750-05-5)
- n,n-Bis(2-hydroxyethyl)-4-iodobenzenesulfonamide (CAS 161431-66-9)
- 2-(2-(4-Hydroxypiperidin-1-yl)-2-oxoethoxy)benzaldehyde (CAS 1365942-16-0)
- D-Ser12-Semaglutide (CAS CATO-C4X-2226240)
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