4-Chloro-3,5-dinitrobenzonitrile CAS 1930-72-9
| CAS No. | 1930-72-9 |
| Molecular Formula | C7H2ClN3O4 |
| Molecular Weight | 227.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-3,5-dinitrobenzonitrile (C7H2ClN3O4) 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).
4-Chloro-3,5-dinitrobenzonitrile (CAS 1930-72-9) is a high-purity analytical reference standard with the molecular formula C7H2ClN3O4 and a molecular weight of 227.56 g/mol.
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.
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 | C7H2ClN3O4 |
| Molecular Weight | 227.56 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 4-Chloro-2,6-dinitrobenzonitrile (CAS 1272756-26-9)
- 2-Chloro-3-methoxy-4-(trifluoromethoxy)pyridine (CAS 1361857-45-5)
- 6-Chloro-3-(2,2,2-trifluoroethoxy)pyridazin-4-amine (CAS 1364677-10-0)
- 3-Chloro-2-methoxy-5-(trifluoromethyl)pyridine 1-oxide (CAS 1823188-17-5)
- 2-Chloro-6-(2,2,2-trifluoro-1-hydroxyethyl)pyridin-3-ol (CAS 344776-74-5)
- Ethyl 3-chloro-2-cyano-4,4,4-trifluorobut-2-enoate (CAS 77429-04-0)
- 1-(6-Chloro-5-fluoropyridin-3-yl)-2,2,2-trifluoroethanone (CAS 1245915-43-8)
- 4-Chloro-7-fluoro-6-nitroquinazoline (CAS 162012-70-6)
Recommended Standards
- Lodoxamide impurity 24 (CAS 27697-45-6)
- 1-(2-Chloropyridin-3-yl)-2,2,2-trifluoroethane-1,1-diol (CAS 1057657-65-4)
- 1-Dodecane-d25-thiol (CAS 869563-00-8)
- Methyl-2,4,5-Trichlorophenylsulfide (CAS 4163-78-4)
- Ethyl 1-(4-trifluoromethylphenyl)piperidine-4-carboxylate (CAS 681481-98-1)
- 3-(Furan-2-yl)-4-methyl-1h-pyrazol-5-amine (CAS 1187766-98-8)
- Acid-propionylamino-Val-Cit-OH (CAS 2098907-84-5)
- Tetraethylphosphonium Hexafluorophosphate (CAS 111928-07-5)
- Hydrocinnamic-d5 Acid (phenyl-d5) (CAS 35845-62-6)
- 21-acetoxy-9-bromo-11b-hydroxy-16a-methyl-pregna-1,4-diene-3,20-dione (CAS 31653-81-3)
- 8-Methoxyquinoxalin-6-amine (CAS 103755-50-6)
- Methyl (S)-7,9-dimethyl-5-((2-methyl-2H-tetrazol-5-yl)amino)-2,3,4,5-tetrahydro-1H-benzo[b]azepine-1-carboxylate (CAS 1259393-32-2)
- 4-Iodo-2,5-dimethyl-1h-pyrrole-3-carbaldehyde (CAS 1266378-77-1)
- Semaglutide impurity 200 (CAS CATO-C4X-2226200)
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