6-Bromo-7-nitro-1H,3H-benzo[de]isochromene-1,3-dione CAS 27742-73-0
| CAS No. | 27742-73-0 |
| Molecular Formula | C12H4BrNO5 |
| Molecular Weight | 322.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 6-Bromo-7-nitro-1H,3H-benzo[de]isochromene-1,3-dione 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.
6-Bromo-7-nitro-1H,3H-benzo[de]isochromene-1,3-dione (CAS 27742-73-0), molecular formula C12H4BrNO5 and molecular weight 322.07 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 6-Bromo-7-nitro-1H,3H-benzo[de]isochromene-1,3-dione (C12H4BrNO5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 322.07 g/mol, it falls into the moderately-high-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C12H4BrNO5 |
| Molecular Weight | 322.07 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 4-Bromo-3-fluoro-2-(trifluoromethyl)benzenesulfonamide (CAS 2384206-77-1)
- 6-Bromo-5-nitro-1H,3H-benzo[de]isochromene-1,3-dione (CAS 52821-19-9)
- Ethyl 3-bromo-2-cyano-6-(trifluoromethyl)benzoate (CAS 1805023-21-5)
- Methyl 2-(4-bromo-2-cyano-6-(trifluoromethyl)phenyl)acetate (CAS 1805023-30-6)
- Ethyl 2-bromo-6-cyano-4-(trifluoromethyl)benzoate (CAS 1805186-77-9)
- Methyl 2-(4-bromo-2-cyano-5-(trifluoromethyl)phenyl)acetate (CAS 1805188-60-6)
- Ethyl 4-bromo-2-cyano-5-(trifluoromethyl)benzoate (CAS 1805250-49-0)
- Ethyl 2-bromo-4-cyano-5-(trifluoromethyl)benzoate (CAS 1805417-72-4)
Recommended Standards
- Diethyl ((2-iodoethoxy)methyl)phosphonate (CAS 117087-29-3)
- 5-(5-Iodothiophen-3-yl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 1508347-42-9)
- 3-(1,3-Dioxolan-2-yl)-2-fluoro-5-iodobenzaldehyde (CAS 2586126-27-2)
- 2,2'-((Perfluoroethane-1,2-diyl)bis(oxy))bis(2,2-difluoroacetic acid) (CAS 55621-21-1)
- (2S,4S)-1,4-Dimethylpyrrolidine-2-carboxylic acid hydrochloride (CAS 6734-42-5)
- 1-(3,4-Difluorophenyl)hexan-1-amine (CAS 1038967-65-5)
- (Z)-Ethyl 2-(piperidin-2-ylidene)acetate (CAS 25654-24-4)
- Glucosilsteviol (CAS 60129-60-4)
- 4-Chloro-3-methyl-1H-pyrrolo[2,3-b]pyridine-6-carbonitrile (CAS 2698319-47-8)
- 2-(3-Chloro-5-(methoxymethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1256360-44-7)
- 2-{[(2-methoxyethyl)amino]methyl}-3,4-dihydroquinazolin-4-one hydrochloride (CAS 1049769-57-4)
- 3-Amino-1-[4-(propan-2-yloxy)phenyl]thiourea (CAS 1037165-03-9)
- 4,4'-(Pyrene-1,6-diyl)dianiline (CAS 1634668-56-6)
- C-Peptide (Proinsulin) (CAS 59112-80-0)
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