N-[5-(3-Chlorophenyl)-2,7-dioxo-1,2,4,7-tetrahydropyrazolo[1,5-a]pyrimidin-3-yl]acetamide CAS 1257440-43-9
| CAS No. | 1257440-43-9 |
| Molecular Formula | C14H11ClN4O3 |
| Molecular Weight | 318.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies N-[5-(3-Chlorophenyl)-2,7-dioxo-1,2,4,7-tetrahydropyrazolo[1,5-a]pyrimidin-3-yl]acetamide (CAS 1257440-43-9), a certified reference material (molecular formula C14H11ClN4O3, MW 318.72 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, N-[5-(3-Chlorophenyl)-2,7-dioxo-1,2,4,7-tetrahydropyrazolo[1,5-a]pyrimidin-3-yl]acetamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 318.72 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C14H11ClN4O3 |
| Molecular Weight | 318.72 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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; 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related N Standards
- 3-(4-Chlorophenyl)-1-(2,4-difluorophenyl)-1H-pyrazole-4-carbaldehyde (CAS 618098-76-3)
- 1-(4-Chlorophenyl)-6,7-dimethoxyisochroman-3-one (CAS 167475-75-4)
- 2-(4-Chlorophenyl)-4-(3-methoxyphenyl)-4-oxobutanoic acid (CAS 866136-20-1)
- 2-[(3-Chlorophenyl)formamido]ethyl N-phenylcarbamate (CAS 478066-63-6)
- N-((1-(4-Chlorophenyl)-5-oxopyrrolidin-3-yl)methyl)furan-2-carboxamide (CAS 954705-95-4)
- 1-(3-Chlorophenyl)-4-(5-nitropyridin-2-yl)piperazine (CAS 400088-81-5)
- 2-{[(2-chlorophenyl)carbamoyl]amino}-4,6-dimethylpyridine-3-carboxamide (CAS 338975-92-1)
- Ethyl 7-(4-chlorophenyl)-5-methyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate (CAS 329796-03-4)
Recommended Standards
- Nitrazepam Impurity 3 (CAS 20821-91-4)
- 2-Chloro-4-morpholinopyrido[3',2':4,5]furo[3,2-d]pyrimidine-8-carbaldehyde (CAS 1268241-81-1)
- N-(4-acetylphenyl)-2-chloro-5-nitrobenzamide (CAS 346723-04-4)
- (3E,5E)-4-[(4-Chlorophenyl)amino]-6-(dimethylamino)-1,1,1-trifluorohexa-3,5-dien-2-one (CAS 338393-37-6)
- 3-(((2-Fluorophenyl)amino)methyl)phenol (CAS 1019482-83-7)
- 4-(Benzyloxy)butanenitrile (CAS 85174-51-2)
- 6-Chloroquinoline HCl (CAS 55377-25-8)
- Dimethyl 1-isopropyl-1H-pyrazole-3,4-dicarboxylate (CAS 61544-04-5)
- Gatifloxacin Sesquihydrate (CAS 180200-66-2)
- (R)-N-(1-(2-Aminoethyl)pyrrolidin-3-yl)-N-isopropylacetamide (CAS 1354001-39-0)
- (S)-2-Amino-N-((2-chlorothiazol-5-yl)methyl)-N-methylpropanamide (CAS 1354007-76-3)
- Ethyl 5-amino-1-(1,3-thiazol-2-yl)-1h-pyrazole-4-carboxylate (CAS 112267-06-8)
- Methyl 3-(1H-indol-7-yl)acrylate (CAS 104682-97-5)
- Semaglutide impurity 58 (CAS CATO-C4X-222658)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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