1-Bromo-4-nitrosobenzene CAS 3623-23-2
| CAS No. | 3623-23-2 |
| Molecular Formula | C6H4BrNO |
| Molecular Weight | 186.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-Bromo-4-nitrosobenzene (CAS 3623-23-2), molecular formula C6H4BrNO and molecular weight 186.01 g/mol, is a CATO reference standard with documented purity and traceability.
1-Bromo-4-nitrosobenzene (C6H4BrNO) contains an amide group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H4BrNO |
| Molecular Weight | 186.01 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- (Naphthalen-2-ylmethyl)boronic acid (CAS 86819-98-9)
- (Naphthalen-1-ylmethyl)boronic acid (CAS 86819-97-8)
- 2-(4-Bromofuran-2-yl)acetonitrile (CAS 59413-88-6)
- (7-Methylnaphthalen-2-yl)boronic acid (CAS 2125969-38-0)
- 2-[2-(6-Chloro-pyrazin-2-yl)-ethyl]-piperidine-1-carboxylic acid tert-butyl ester (CAS 1361112-92-6)
- 3-(4-Fluorophenyl)-1-methyl-1,4,7-triazaspiro[4.4]non-3-en-2-one (CAS 1710674-60-4)
- 2-(Chloromethyl)-6-(difluoromethyl)benzo[d]oxazole (CAS 1806326-33-9)
- 2-Methoxy-5-methyl-1H-benzo[d]imidazol-1-ol (CAS 71468-06-9)
- 4-Cyclopropyl-5-(pyrrolidin-1-yl)-4h-1,2,4-triazole-3-thiol (CAS 923215-66-1)
- Isavuconazole Impurity 125 (CAS CATO-C4X-1236125)
- Ethyl 2-(1-benzyl-1H-imidazol-2-yl)-2-oxoacetate (CAS 1197631-86-9)
- 1-(3,4-Dichlorophenyl)-3-(3,4-dimethylphenyl)propan-1-one (CAS 898779-81-2)
- Abiraterone Impurity 58 (CAS 2484719-09-5)
- Neuropeptide GE (CAS 134748-04-2)
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