3-(Pyridin-4-yl)-1H-pyrazole-4-carbaldehyde CAS 1152541-94-0
| CAS No. | 1152541-94-0 |
| Molecular Formula | C9H7N3O |
| Molecular Weight | 173.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(Pyridin-4-yl)-1H-pyrazole-4-carbaldehyde (CAS 1152541-94-0) is a high-purity analytical reference standard with the molecular formula C9H7N3O and a molecular weight of 173.17 g/mol.
The molecular framework of 3-(Pyridin-4-yl)-1H-pyrazole-4-carbaldehyde (C9H7N3O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C9H7N3O |
| Molecular Weight | 173.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 3 |
Related Pyridin Standards
- 3-(Pyridin-3-yl)-1H-pyrazole-4-carbaldehyde (CAS 1006482-43-4)
- 6-Pyridin-4-ylpyrimidin-4-ol (CAS 1026857-25-9)
- 6-(Pyridin-3-yl)pyrimidin-4-ol (CAS 1105195-52-5)
- 1152541-98-4 3-Pyridin-2-yl-1H-pyrazole-4-carbaldehyde (CAS 1152541-98-4)
- 1-(Pyridin-4-yl)-1H-pyrazole-4-carbaldehyde (CAS 1155577-06-2)
- 5-(Pyridin-4-yl)pyrazin-2-ol (CAS 1159819-68-7)
- 5-(Pyridin-3-yl)pyrazin-2-ol (CAS 1159819-85-8)
- 1-(Pyridin-4-yl)-1H-pyrazole-5-carbaldehyde (CAS 1269293-85-7)
Recommended Standards
- (2S,4R)-Ethyl 4-hydroxy-5-oxopyrrolidine-2-carboxylate (CAS 115223-52-4)
- (2S,4S)-Ethyl 4-hydroxy-5-oxopyrrolidine-2-carboxylate (CAS 115223-51-3)
- [2,2'-Bipyrimidin]-5-amine (CAS 1154009-40-1)
- 1-Hydroxyisoquinoline-7-carbaldehyde (CAS 1150618-27-1)
- 2-Chloro-N-(4-chlorobenzyl)-N-isopropylacetamide (CAS 1176648-80-8)
- 2-(4-(2-Chlorophenyl)-tetrahydro-2H-pyran-4-yl)acetic acid (CAS 1226244-26-3)
- 4-Bromo-5-methoxy-1H-benzo[d]imidazole (CAS 1008361-66-7)
- 4-((1-(Pyridin-2-yl)ethyl)amino)butan-2-ol (CAS 1342157-58-7)
- FA-Gly-Nva-NH2 (M-1830.0250) (CAS 67607-50-5)
- 4,6-Dichloro-5-methylnicotinamide (CAS 479089-95-7)
- Fast Red B Salt (Technical Grade) (CAS 49735-71-9)
- 4-Fluoropyrazolo[1,5-a]pyridine-2-carboxylic acid (CAS 1273312-59-6)
- Olopatadine Impurity 36 HCl (CAS CATO-C4X-171836)
- Tirzepatide Impurity 57 (CAS CATO-C4X-324057)
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