1H-Pyridazin-6-one hydrate CAS 5463-28-5
| CAS No. | 5463-28-5 |
| Molecular Formula | C4H4N2O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1H-Pyridazin-6-one hydrate (CAS 5463-28-5), molecular formula C4H4N2OH2O and molecular weight 114.10 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C4H4N2OH2O, 1H-Pyridazin-6-one hydrate contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 114.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C4H4N2O H2O |
| Molecular Weight | 114.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Related H Standards
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- 2-(pyridazin-3-yl)ethan-1-ol (CAS 101479-62-3)
- Phenyl pyridazin-3-ylcarbamate (CAS 1020327-61-0)
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- Pyridazin-3-yl trifluoromethanesulfonate (CAS 1031928-95-6)
Recommended Standards
- 3-(1,3-Benzothiazol-2-yl)-3-methoxypropanoic acid (CAS 342778-82-9)
- 4-Piperidinylmethyl cyclopropanecarboxylatehydrochloride (CAS 1219968-10-1)
- 4-Bromo-1,5-naphthyridine (CAS 90001-34-6)
- (1S,2R)-2-Isopropylcyclopropanecarboxylic acid (CAS 2375816-26-3)
- 1,3,5-Trimethyl-1h-pyrazole-4-thiol (CAS 1152595-72-6)
- (R)-3,4-Dihydroxy-5-(hydroxymethyl)furan-2(5H)-one (CAS 138760-70-0)
- 3-Amino-4-methoxy-N-(thiazol-2-yl)benzamide (CAS 926263-37-8)
- 4-Formyl-2-methoxyphenyl 3-methylbenzoate (CAS 321725-87-5)
- 2-[2-(2-aminoethyl)-1,3-thiazol-4-yl]acetic acid dihydrochloride (CAS 1258649-92-1)
- Tirzepatide Impurity 13 (CAS CATO-C4X-324013)
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