7-(4-Chloro-3-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine CAS 478249-07-9
| CAS No. | 478249-07-9 |
| Molecular Formula | C13H9ClN4O2 |
| Molecular Weight | 288.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-(4-Chloro-3-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
7-(4-Chloro-3-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine (CAS 478249-07-9) is a high-purity analytical reference standard with the molecular formula C13H9ClN4O2 and a molecular weight of 288.69 g/mol.
Structurally, 7-(4-Chloro-3-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine (C13H9ClN4O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 288.69 g/mol, it falls into the medium-molecular-weight range. 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.
CATO manufactures 7-(4-Chloro-3-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H9ClN4O2 |
| Molecular Weight | 288.69 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, keep tightly closed to prevent evaporation |
| 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 2-Chloro-3-((5-methylisoxazol-3-yl)amino)naphthalene-1,4-dione (CAS 120983-28-0)
- 6-Chloro-5-(1-methyl-1H-benzo[d]imidazol-2-yl)pyridazine-3-carboxylic acid (CAS 1355233-87-2)
- 9-Chloro-5-methoxy-3-nitroacridine (CAS 1744-99-6)
- 4-Chloro-10-methyl-2-nitroacridin-9(10H)-one (CAS 90019-38-8)
- 6-chloro-3-(4-nitrophenyl)-2H-1,4-benzoxazine (CAS 477867-74-6)
- 9-Chloro-2-methoxy-1-nitroacridine (CAS 89974-80-1)
- 9-Chloro-2-methoxy-3-nitroacridine (CAS 89974-81-2)
- 9-Chloro-2-methoxy-4-nitroacridine (CAS 71353-18-9)
Recommended Standards
- 7-Amino-3-(4-chlorophenyl)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 692287-68-6)
- 6-(4-Chlorophenyl)-3-methyl-[1,2]oxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 753468-45-0)
- 6-(3-Chlorophenyl)-3-methyl-[1,2]oxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 954584-74-8)
- 6-(2-Chlorophenyl)-3-methyl-[1,2]oxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 954263-02-6)
- Thiophene-3,4-dicarbonyl dichloride (CAS 33527-26-3)
- Prion Protein (106-126) (human) (CAS 148439-49-0)
- 1-(2-(Furan-2-yl)-2-oxoethyl)pyridin-1-ium iodide (CAS 53676-94-1)
- (5,6,7,8-Tetrahydroimidazo[1,2-a]pyridin-3-yl)methanol (CAS 1086376-71-7)
- Methyl 5-amino-1-(4-phenylthiazol-2-yl)-1H-pyrazole-4-carboxylate (CAS 956738-04-8)
- 1,6-Diphenylhexane-1,3,4,6-tetrone (CAS 53454-78-7)
- 2-Chloro-7H-pyrrolo[2,3-d]pyrimidine-6-carbaldehyde (CAS 1936028-73-7)
- 6-((Pyridin-2-ylmethyl)thio)-7H-purine (CAS 82499-10-3)
- 1-(Pentafluorophenyl)-1h-pyrazol-3-amine (CAS 1307462-59-4)
- Semaglutide impurity 56 (CAS CATO-C4X-222656)
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