Pyridazin-4-ol hydrobromide CAS 1923238-87-2
| CAS No. | 1923238-87-2 |
| Molecular Formula | C4H4N2O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Pyridazin-4-ol hydrobromide (CAS 1923238-87-2), molecular formula C4H4N2OHBr and molecular weight 177.00 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Pyridazin-4-ol hydrobromide (C4H4N2OHBr) is characterized by an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures Pyridazin-4-ol hydrobromide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H4N2O HBr |
| Molecular Weight | 177.00 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Pyridazin Standards
- 1-(pyridazin-4-yl)ethan-1-amine (CAS 1008498-13-2)
- Phenyl(pyridazin-3-yl)methanamine hydrochloride (CAS 1009371-17-8)
- Phenyl(pyridazin-3-yl)methanamine (CAS 1009409-73-7)
- 2-(pyridazin-3-yl)ethan-1-ol (CAS 101479-62-3)
- Phenyl pyridazin-3-ylcarbamate (CAS 1020327-61-0)
- N-(Pyridazin-4-ylmethyl)benzamide (CAS 1028615-71-5)
- Pyridazin-4-ylmethanamine dihydrochloride (CAS 1028615-75-9)
- Pyridazin-3-yl trifluoromethanesulfonate (CAS 1031928-95-6)
Recommended Standards
- 1-(3-Amino-5-chloro-2-methoxy-4-methylphenyl)ethan-1-one (CAS 1382995-26-7)
- N-(2-chlorobenzyl)-3-nitropyridin-2-amine (CAS 339028-02-3)
- 1-(4-Methyl-3,4-dihydropyrido[2,3-b]pyrazin-1(2H)-yl)ethanone (CAS 138768-66-8)
- N-benzyl-N-(2-(4-benzyl-2,2-dimethyltetrahydro-2H-pyran-4-yl)ethyl)acetamide (CAS 6141-60-2)
- Methyl 5-bromo-3-hydroxythiophene-2-carboxylate (CAS 130228-59-0)
- 5-(tert-butyl)-3,4-dihydro-2H-pyrrole (CAS 51269-70-6)
- 6,7-Dimethylbenzofuran-3-acetic Acid (CAS 610277-17-3)
- Trimorpholinophosphine Oxide (CAS 4441-12-7)
- Ethyl 6-amino-5-cyano-2-methyl-4-(2-((4-methylbenzyl)oxy)phenyl)-4H-pyran-3-carboxylate (CAS 337505-95-0)
- Tirzepatide Impurity 49 (CAS CATO-C4X-324049)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com