2-(4-chloro-1h-pyraZol-1-yl)acetohydrazide CAS 934175-20-9
| CAS No. | 934175-20-9 |
| Molecular Formula | C5H7ClN4O |
| Molecular Weight | 174.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 174.59 g/mol gives 2-(4-chloro-1h-pyraZol-1-yl)acetohydrazide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(4-chloro-1h-pyraZol-1-yl)acetohydrazide (CAS 934175-20-9) is a high-purity analytical reference standard with the molecular formula C5H7ClN4O and a molecular weight of 174.59 g/mol.
Structurally, 2-(4-chloro-1h-pyraZol-1-yl)acetohydrazide (C5H7ClN4O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 174.59 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C5H7ClN4O |
| Molecular Weight | 174.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related chloro Standards
- 4-Chloro-5-hydrazinyl-2-methylpyridazin-3(2H)-one (CAS 1075-08-7)
- 2-(4-Chloro-1H-pyrazol-1-yl)-N-hydroxyacetimidamide (CAS 1173310-66-1)
- 5-Chloro-N,N-dimethyl-1H-1,2,4-triazole-3-carboxamide (CAS 1228553-10-3)
- 3-Chloro-1-methyl-1H-pyrazole-4-carbohydrazide (CAS 1255147-34-2)
- 3-(3-Chloro-1H-1,2,4-triazol-5-yl)propanamide (CAS 1279219-46-3)
- 2-Chloro-4-hydrazinyl-5-methoxypyrimidine (CAS 98021-95-5)
- 3-Chloro-N-(4H-1,2,4-triazol-3-yl)propanamide (CAS 901345-07-1)
- 4-Chloro-1-methyl-1h-pyrazole-5-carbohydrazide (CAS 400878-07-1)
Recommended Standards
- 2(1H)-Pyrazinone, 5-chloro-3-hydrazinyl-1-methyl- (CAS 98078-35-4)
- 4-Chloro-5-(1-methylhydrazinyl)pyridazin-3(2H)-one (CAS 96017-24-2)
- Altretamine chloro keto analog (CAS 63537-70-2)
- Minoxidil Impurity 68 (CAS CATO-C4X-170068)
- Ethyl 2-ethyl-3-methyl-4,5-dioxotetrahydrofuran-3-carboxylate (CAS 94088-20-7)
- Phosphate ion in water quality (CAS CATO-CQCM102191)
- Methyl 3-chloro-1H-pyrrolo[3,2-b]pyridine-6-carboxylate (CAS 1190312-70-9)
- 3-Methyl-1-[5-(trifluoromethyl)pyridin-2-yl]piperazine (CAS 866785-24-2)
- Ethyl 5,6-dimethylpicolinate (CAS 25863-27-8)
- 2-(Morpholin-4-yl)-2-(oxolan-3-yl)ethan-1-amine (CAS 941400-32-4)
- CNB-001, >97% (CAS 828911-76-8)
- (4-(Difluoromethyl)-3-fluoro-5-methylpyridin-2-yl)methanol (CAS 1805616-45-8)
- Nicergoline EP Impurity C (CAS 35155-28-3)
- Insulin Degludec Impurity 10 (CAS CATO-C4X-215710)
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