3-Pyridin-4-yl-1H-pyrazole-5-carbohydrazide CAS 32725-40-9
| CAS No. | 32725-40-9 |
| Molecular Formula | C9H9N5O |
| Molecular Weight | 203.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-Pyridin-4-yl-1H-pyrazole-5-carbohydrazide (CAS 32725-40-9), molecular formula C9H9N5O and molecular weight 203.20 g/mol, is a CATO reference standard with documented purity and traceability.
3-Pyridin-4-yl-1H-pyrazole-5-carbohydrazide (C9H9N5O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; 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).
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 | C9H9N5O |
| Molecular Weight | 203.20 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.) | 1966 |
| Nitrogen Atoms | 5 |
Related Pyridin Standards
- 2-(5-(Pyridin-3-yl)-4H-1,2,4-triazol-3-yl)acetamide (CAS 1018155-92-4)
- 2-(3-(Pyridin-2-yl)-1H-pyrazol-1-yl)acetic acid (CAS 1019008-17-3)
- 4-Methyl-2-(pyridin-2-yl)-1H-imidazole-5-carboxylic acid (CAS 1083318-27-7)
- 3-Methyl-1-(pyridin-2-yl)-1h-pyrazole-4-carboxylic acid (CAS 1104279-87-9)
- 1-methyl-3-(pyridin-3-yl)-1H-pyrazole-4-carboxylic acid (CAS 1152510-52-5)
- 1-Methyl-3-(pyridin-4-yl)-1h-pyrazole-4-carboxylic acid (CAS 1152510-62-7)
- 1-Methyl-3-(pyridin-2-yl)-1h-pyrazole-4-carboxylic acid (CAS 1152510-81-0)
- 1-(Pyridin-2-ylmethyl)-1h-pyrazole-4-carboxylic acid (CAS 1153373-39-7)
Recommended Standards
- 3-Methyl-6-phenyl-1,3,5-triazine-2,4(1H,3H)-dione (CAS 66130-06-1)
- 3-pyridin-4-yl-1H-pyrazole-5-carbohydrazide (CAS 33974-26-4)
- 3-Methyl-4-nitroso-1-phenyl-1H-pyrazol-5-ol (CAS 87085-88-9)
- 4-(((2-Hydroxyphenyl)imino)methyl)-1,2-dihydro-3H-pyrazol-3-one (CAS 339020-80-3)
- 3-Chloro-2-(4-methylpiperidin-1-yl)aniline (CAS 842965-35-9)
- N-Ethyl-2-hydroxypropanamide (CAS 6280-14-4)
- N1-Cyclopropyl-N2-(2-(4-fluorophenoxy)ethyl)oxalamide (CAS 1208406-33-0)
- Latamoxef impurity 44 (CAS CATO-C4X-179844)
- 2-(iodomethyl)-9-methylsulfonyl-1-oxaspiro[4.4]nonane (CAS 1859095-48-9)
- 1H-2-Benzopyran-1-one, 3-acetyl-7-fluoro- (CAS 1448704-71-9)
- 1-(4-Hydroxy-3,5-dimethylphenyl)-2-(piperidin-1-yl)ethan-1-one (CAS 1331823-95-0)
- Eethyl 4-ethynyl-2-methylbenzoate (CAS 216443-95-7)
- (4-(4-Chlorophenoxy)phenyl)methanamineHCl (CAS 262862-71-5)
- D-Ser32-Tirzepatide (CAS CATO-CPTD788692)
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