Ridazolol CAS 83395-21-5
| CAS No. | 83395-21-5 |
| Molecular Formula | C15H18Cl2N4O3 |
| Molecular Weight | 373.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 373.23 g/mol gives Ridazolol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ridazolol (CAS 83395-21-5), molecular formula C15H18Cl2N4O3 and molecular weight 373.23 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ridazolol (C15H18Cl2N4O3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C15H18Cl2N4O3 |
| Molecular Weight | 373.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Recommended Standards
- N-(1-(2,6-dichlorobenzyl)-2-oxo-1,2-dihydropyridin-3-yl)benzamide (CAS 338784-03-5)
- Tadalafil Impurity 174 (CAS CATO-C4X-1087174)
- 5-Chloro-1-[(4-chlorophenyl)methyl]-6-oxo-N-phenyl-1,6-dihydropyridine-3-carboxamide (CAS 339024-55-4)
- Mefenpyr-Diethyl (CAS 135590-91-9)
- Policresulen(50% Aqueous Solution) (CAS 101418-00-2)
- 4-(1,2,2,2-Tetrafluoro-1-trifluoromethyl-ethyl)-benzene-1,3-diamine (CAS 58524-63-3)
- 3-CHloro-4h-pyrazolo[1,5-a]pyrimidin-7-one (CAS 2092929-92-3)
- 3-(3,5-Dioxo-2,3,4,5-tetrahydro-1,2,4-triazin-6-yl)propanoic acid (CAS 28280-67-3)
- Methyl 3-amino-5-chlorothiophene-2-carboxylate (CAS 107818-51-9)
- 4,9-Dibromo-6,7-bis(4-(2-(2-(2-(2-bromoethoxy)ethoxy)ethoxy)ethoxy)phenyl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline (CAS 1337875-65-6)
- tert-Butyl 2-methyl-1H-indole-1-carboxylate (CAS 98598-96-0)
- Vinyliso-octylether (CAS 37769-62-3)
- (E)-1-Bromo-4-(3-chloro-1-propen-1-yl)benzene (CAS 104293-07-4)
- Tau Peptide (45-73) (Exon 2/Insert 1 Domain) trifluoroacetate salt (CAS 2022956-54-1)
Why CATO?
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