5-azido-4-bromo-2,3-dihydropyridazin-3-one CAS 21456-78-0
| CAS No. | 21456-78-0 |
| Molecular Formula | C4H6BrN5O |
| Molecular Weight | 220.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-azido-4-bromo-2,3-dihydropyridazin-3-one (CAS 21456-78-0), molecular formula C4H6BrN5O and molecular weight 220.03 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-azido-4-bromo-2,3-dihydropyridazin-3-one (C4H6BrN5O) contains an amide group, a hydroxyl group, an ether linkage, bromine 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 220.03 g/mol, it falls into the medium-molecular-weight range. 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.
CATO manufactures 5-azido-4-bromo-2,3-dihydropyridazin-3-one 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 | C4H6BrN5O |
| Molecular Weight | 220.03 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.) | 1963 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 5 |
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Recommended Standards
- 2,4-Dihydrospiro[1,5-benzodioxepine-3,1'-cyclopropane]-6-boronic acid (CAS 2096335-53-2)
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- (E)-(4-(3-Ethoxy-3-oxoprop-1-en-1-yl)phenyl)boronic acid (CAS 850568-49-9)
- 5-Methyl-2-phenyl-1,3,2-dioxaborinane-5-carboxylic acid (CAS 839720-60-4)
- (2,4-Dimethoxypyrimidin-6-yl)zinc pivalate (0.86 mmol/g) (CAS 1643792-49-7)
- 2-(2-(2-(5-Methyl-2,4-bis(1-phenylethyl)phenoxy)ethoxy)ethoxy)ethanol (CAS 110199-19-4)
- 5-Hydroxy-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxaldehyde (CAS 179732-64-0)
- Ethyl 2-methyl-3-(oxan-4-yl)propanoate (CAS 1461715-33-2)
- Methyl 3-Amino-2-naphthoate (CAS 21597-54-6)
- 1-(1H-Pyrrol-1-yl)-1H-benzo[d]imidazole (CAS 75107-05-0)
- 3-Methoxy-4-(trifluoromethyl)benzyl Alcohol (CAS 276861-64-4)
- 3-(3-(Trifluoromethyl)phenyl)-1H-indazol-5-amine (CAS 395099-47-5)
- Naringin Dihydrochalcone (CAS 18916-17-1)
- Semaglutide impurity 103 (CAS 1446013-07-5)
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