4-(1-Methyl-1H-pyrazol-5-yl)pyridine CAS 905281-60-9
| CAS No. | 905281-60-9 |
| Molecular Formula | C9H9N3 |
| Molecular Weight | 159.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 159.19 g/mol gives 4-(1-Methyl-1H-pyrazol-5-yl)pyridine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-(1-Methyl-1H-pyrazol-5-yl)pyridine (CAS 905281-60-9), molecular formula C9H9N3 and molecular weight 159.19 g/mol, is a CATO reference standard with documented purity and traceability.
4-(1-Methyl-1H-pyrazol-5-yl)pyridine (C9H9N3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. Its physicochemical properties are representative of its class; 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).
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.
As a certified reference material (CRM), 4-(1-Methyl-1H-pyrazol-5-yl)pyridine 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.
Physical & Chemical Properties
| Molecular Formula | C9H9N3 |
| Molecular Weight | 159.19 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 4-(1-Methyl-1H-pyrazol-4-yl)pyridine (CAS 870863-00-6)
- 4-(3-Pyrazolyl)aniline (CAS 89260-45-7)
- 4-(1H-Imidazol-4-yl)aniline (CAS 29528-28-7)
- 4-(5-Methyl-1H-pyrazol-3-yl)pyridine (CAS 20007-63-0)
- (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-((2,6-dichlorobenzyl)oxy)phenyl)propanoic acid (CAS 419573-91-4)
- N-(4-Fluoro-9H-fluoren-2-yl)acetamide (CAS 2823-91-8)
- tert-Butyl 2,9-diazaspiro[5.5]undecane-9-carboxylate (CAS 1023595-19-8)
- 6062-26-6 UQV4K3H2XM MCPB-sodium [ISO] Butyric acid, 4-((4-chloro-o-tolyl)oxy)-, sodium salt Sodium 4-(4-chloro-o-tolyloxy)butyrate Butanoic acid, 4-(4-chloro-2-methylphenoxy)-, sodium salt M&B 3046 Butyric acid, 4-(4-chloro-2-methylphenoxy)-, sodium salt Can-Trol Caswell No. 558A 4-(4-Chlor-2-methyl-phenoxy)-buttersaeure natriumsalz [German] Chloromethylphenoxybutyric acid sodium salt 4-(4-Chloro-2-methylphenoxy)butyric acid sodium salt (4-Chloro-o-tolyloxy)butyric acid sodium salt EINECS 227-989-3 EPA Pesticide Chemical Code 019202 MCPB sodium 2,4-MCPB sodium 4-(2-Methyl-4-chlorophenoxy)butyric acid, sodium salt SYS 67MB Tropotox MCPB-sodium 4-(4-Chlor-2-methyl-phenoxy)-buttersaeure natriumsalz MCPB sodium salt UNII-UQV4K3H2XM Sodium 4-(2-methyl-4-chlorophenoxy)butyrate (CAS 6062-26-6)
- Ethyl 6-hydroxyquinoline-3-carboxylate (CAS 6972-86-7)
- (S)-3-Methyl-5-phenyloxazolidin-4-one (CAS 89053-48-5)
- (6-Iodo-3,4-dihydro-2H-pyrano-[3,2-b]pyridin-8-yl)methanol (CAS 1346446-89-6)
- 4-(1h-1,3-Benzodiazol-1-yl)benzene-1-carboximidamide hydrochloride (CAS 1235441-72-1)
- 4-Phenoxypyrrolidin-3-ol (CAS 1343376-09-9)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com