1,2-bis(3-fluorophenyl)diazene CAS 331-21-5
| CAS No. | 331-21-5 |
| Molecular Formula | C12H8F2N2 |
| Molecular Weight | 218.20 g/mol |
| 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.
1,2-bis(3-fluorophenyl)diazene (CAS 331-21-5) is a high-purity analytical reference standard with the molecular formula C12H8F2N2 and a molecular weight of 218.20 g/mol.
1,2-bis(3-fluorophenyl)diazene (C12H8F2N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO manufactures 1,2-bis(3-fluorophenyl)diazene 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 | C12H8F2N2 |
| Molecular Weight | 218.20 g/mol |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related bis Standards
- (2-Fluorophenyl)(3-fluorophenyl)methanone (CAS 58139-11-0)
- (3-Fluorophenyl)(4-fluorophenyl)methanone (CAS 345-71-1)
- Bis(2-fluorophenyl)methanone (CAS 342-23-4)
- 2-(4-Fluorophenyl)pyrimidine-4-carboxylic acid (CAS 1092300-73-6)
- 6-(3-Fluorophenyl)pyrimidine-4-carboxylic acid (CAS 1207724-59-1)
- 4-(3-Fluorophenyl)-3-nitropyridine (CAS 1292369-68-6)
- 2-(3-Fluorophenyl)pyrimidine-4-carboxylic acid (CAS 1315364-03-4)
- 4-(4-Fluorophenyl)pyrimidine-2-carboxylic acid (CAS 1491142-21-2)
Recommended Standards
- 1-((Trifluoromethyl)sulfonyl)piperazine (CAS 89245-14-7)
- 1,3:2,5:4,6-Tri-O-methylene-D-mannitol (CAS 5434-31-1)
- [4-(difluoromethoxy)-3-ethoxyphenyl]methanol (CAS 773868-64-7)
- 2-((6,6-Difluorocyclooct-4-yn-1-yl)oxy) acetic acid (CAS 960149-22-8)
- 2-(4-Fluorophenoxy)-4-methoxypyridine-3-carboxamide (CAS 341966-56-1)
- 2-(Benzyloxy)-5-fluoro-1,1'-biphenyl (CAS 2624417-57-6)
- 4-(cyclohexyloxy)cyclohexan-1-one (CAS 1565336-69-7)
- 3-Hydroxyoxetane-3-carboxylic acid (CAS 1450997-88-2)
- (R)-1-(2,5-Dimethylthiophen-3-yl)ethan-1-amine (CAS 1213617-04-9)
- n-(2,4-Difluorobenzyl)-2-methoxyethan-1-amine (CAS 1019598-24-3)
- (2R,4S)-tert-Butyl 4-((tert-butyldimethylsilyl)oxy)-2-(hydroxymethyl)pyrrolidine-1-carboxylate (CAS 134441-72-8)
- (1R,3S,4S)-2-azabicyclo[2.2.1]Heptane-3-carbonitrile (CAS 1932385-49-3)
- Cefomizole Polymer 2 (CAS CATO-C4X-124553)
- Semaglutide impurity 99 (CAS CATO-C4X-222699)
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