3-Phenyl-2-(2-(piperidin-1-yl)ethoxy)-4H-pyrazino[1,2-a]pyrimidin-4-one hydrobromide CAS 21271-25-0
| CAS No. | 21271-25-0 |
| Molecular Formula | C20H22N4O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-Phenyl-2-(2-(piperidin-1-yl)ethoxy)-4H-pyrazino[1,2-a]pyrimidin-4-one hydrobromide 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.
3-Phenyl-2-(2-(piperidin-1-yl)ethoxy)-4H-pyrazino[1,2-a]pyrimidin-4-one hydrobromide (CAS 21271-25-0), molecular formula C20H22N4O2HBr and molecular weight 431.33 g/mol, is a CATO reference standard with documented purity and traceability.
3-Phenyl-2-(2-(piperidin-1-yl)ethoxy)-4H-pyrazino[1,2-a]pyrimidin-4-one hydrobromide (C20H22N4O2HBr) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H22N4O2 HBr |
| Molecular Weight | 431.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
Related Phenyl Standards
- 1000339-76-3 Ethyl 2-(Piperidin-1-yl)-4-(trifluoromethyl)-1,3-thiazole-5-carboxylate ethyl 2-(piperidin-1-yl)-4-trifluoromethyl-1,3-thiazole-5-carboxylate ethyl 2-piperidin-1-yl-4-(trifluoromethyl)-1,3-thiazole-5-carboxylate (CAS 1000339-76-3)
- 2-(Piperidin-1-yl)-4-(trifluoromethyl)thiazole-5-carboxylic acid (CAS 1000339-77-4)
- Benzyl 2-(piperidin-4-yl)acetate hydrochloride (CAS 1000872-47-8)
- n-(Piperidin-3-ylmethyl)morpholine-4-carboxamide (CAS 1000941-33-2)
- 1000958-55-3 4-Ethyl-1-[2-(piperidin-4-yl)ethyl]piperidine DTXSID60649257 (CAS 1000958-55-3)
- 5-(Piperidin-2-yl)pyridin-2-amine (CAS 100133-12-8)
- 5-(Piperidin-1-ylmethyl)pyrimidine-2,4(1H,3H)-dione (CAS 100133-53-7)
- 1-methyl-5-(piperidin-1-ylcarbonyl)-1H-pyrazol-4-amine (CAS 1001500-82-8)
Recommended Standards
- 2-Amino-5,6-dihydrobenzo[h]quinazolin-4(3H)-one (CAS 7223-85-0)
- 5-Chloro-2-cyclopropyl-6-(methyl(2-phenylcyclopropyl)amino)pyrimidine-4-carboxylic acid (CAS 1956369-25-7)
- 7-(4-Piperidinyloxy)-2H-chromen-2-onehydrochloride (CAS 1185124-26-8)
- 3-[5-(5-Isopropyl-1-methyl-1H-pyrazol-3-yl)-1,3,4-oxadiazol-2-yl]propanoic acid (CAS 1365962-38-4)
- (2Z)-N-[4-(1H-1,3-Benzodiazol-2-yl)phenyl]-8-methoxy-2-{[4-(propan-2-yl)phenyl]imino}-2H-chromene-3-carboxamide (CAS 478342-87-9)
- 3-Bromo-2-chloro-5-fluoropyridine-4-carbaldehyde (CAS 2090368-64-0)
- 2-(2-Bromo-4-chlorophenoxy)propanoic acid (CAS 98590-32-0)
- 2-(3-Ethylpyridin-2-yl)propane-1,3-diol (CAS 865073-34-3)
- 2-(5-Bromopyridin-2-yl)cyclopentan-1-ol (CAS 1420793-49-2)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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