6-Hydroxypyridazine-3-carboxylic Acid Monohydrate CAS 306934-80-5
| CAS No. | 306934-80-5 |
| Molecular Formula | C5H4N2O3 |
| Molecular Weight | N/A |
| 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.
6-Hydroxypyridazine-3-carboxylic Acid Monohydrate (CAS 306934-80-5) is a high-purity analytical reference standard with the molecular formula C5H4N2O3H2O and a molecular weight of 158.11 g/mol.
Based on its molecular formula C5H4N2O3H2O, 6-Hydroxypyridazine-3-carboxylic Acid Monohydrate contains a carbohydrate-derived structure, an amide group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 158.11 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).
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 | C5H4N2O3 H2O |
| Molecular Weight | 158.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Hydroxypyridazine Standards
- 4-hydroxypyridazine-3-carboxylic acid (CAS 1246668-88-1)
- Ethyl 3-Hydroxypyridazine-4-carboxylate (CAS 1445-55-2)
- 3-hydroxypyridazine-4-carbaldehyde (CAS 1936127-37-5)
- 6-Hydroxypyridazine-3-carboxylic acid hydrochloride (CAS 2048273-64-7)
- 4-Hydroxypyridazine (CAS 20733-10-2)
- Ethyl 6-hydroxypyridazine-4-carboxylate (CAS 21427-85-0)
- 5-hydroxypyridazine-4-carboxylic acid (CAS 21579-35-1)
- Methyl 5-hydroxypyridazine-4-carboxylate (CAS 21579-36-2)
Recommended Standards
- 3,5-Dichloro-4-propoxybenzoic acid (CAS 41490-09-9)
- (S)-2-(3-((tert-butoxycarbonyl)amino)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b]azepin-1-yl)acetic acid (CAS 94793-95-0)
- 9-Benzyl-6-fluoro-9H-purine (CAS 55600-75-4)
- 3-((3-Iodoimidazo[1,2-b]pyridazin-6-yl)amino)propan-1-ol (CAS 1803594-78-6)
- Troxipide Impurity 16 (CAS CATO-C4X-214816)
- (3R,4R)-1-(tert-Butoxycarbonyl)-4-(difluoromethyl)pyrrolidine-3-carboxylic acid (CAS 1993278-98-0)
- 1-(6-Formylquinazolin-4-yl)ethyl piperidine-4-carboxylate (CAS 648449-20-1)
- (Z)-1-((2-(6-bromoquinolin-4-yl)-1-(6-methylpyridin-2-yl)ethylidene)amino)pyrrolidin-2-one (CAS 476473-54-8)
- 2,6-Di-tert-butylanthracene (CAS 62375-58-0)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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