4-Chloro-5-hydrazinyl-2-methylpyridazin-3(2H)-one CAS 1075-08-7
| CAS No. | 1075-08-7 |
| Molecular Formula | C5H7ClN4O |
| Molecular Weight | 174.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Chloro-5-hydrazinyl-2-methylpyridazin-3(2H)-one (CAS 1075-08-7), molecular formula C5H7ClN4O and molecular weight 174.59 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H7ClN4O, 4-Chloro-5-hydrazinyl-2-methylpyridazin-3(2H)-one contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 174.59 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
- Urapidil Impurity 14 (CAS 6972-27-6)
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- methyl 5-(chloromethyl)furan-3-carboxylate (CAS 20416-07-3)
- 2-(Dipropylamino)isonicotinic acid (CAS 597564-11-9)
- 4-Aminobenzofuran-2-carbaldehyde (CAS 1368332-65-3)
- 6-Chloro-N-(pyridin-3-yl)pyridin-2-amine (CAS 370571-25-8)
- 68379-02-2 847G178BMC Clofilium Benzenebutanaminium, 4-chloro-N,N-diethyl-N-heptyl- 4-Chloro-N,N-diethyl-N-heptylbenzenebutanaminium UNII-847G178BMC (CAS 68379-02-2)
- 5-(Aminomethyl)-2-fluorobenzonitrile hydrochloride (CAS 1638487-42-9)
- 4-Cyclopropoxy-5-isopropyl-N-methylpyridin-3-amine (CAS 1243310-52-2)
- 6-(2,3-dihydro-1,4-benzodioxin-5-yl)-N-[3-[(dimethylamino)methyl]phenyl]-2-methoxy-pyridin-3-amine (CAS 2306268-61-9)
- Oxane-3-carbohydrazide (CAS 59293-33-3)
- tert-Butyl 6-amino-3-methyl-1H-indazole-1-carboxylate (CAS 219507-75-2)
- Palmitoyl hexapeptide-6 (CAS 891498-01-4)
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