| CAS No. | 92567-02-7 |
| Molecular Formula | C7H4ClN5O2 |
| Molecular Weight | 225.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 225.59 g/mol gives 5-(4-Chloro-2-nitrophenyl)-2H-tetrazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(4-Chloro-2-nitrophenyl)-2H-tetrazole (CAS 92567-02-7) is a high-purity analytical reference standard with the molecular formula C7H4ClN5O2 and a molecular weight of 225.59 g/mol.
5-(4-Chloro-2-nitrophenyl)-2H-tetrazole (C7H4ClN5O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), 5-(4-Chloro-2-nitrophenyl)-2H-tetrazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
| Molecular Formula | C7H4ClN5O2 |
| Molecular Weight | 225.59 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; 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.) | 1983 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |