3,4-Dichloro-7-nitro-1H-isochromen-1-one CAS 123472-98-0
| CAS No. | 123472-98-0 |
| Molecular Formula | C9H3Cl2NO4 |
| Molecular Weight | 260.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,4-Dichloro-7-nitro-1H-isochromen-1-one (C9H3Cl2NO4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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 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).
3,4-Dichloro-7-nitro-1H-isochromen-1-one (CAS 123472-98-0), molecular formula C9H3Cl2NO4 and molecular weight 260.03 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H3Cl2NO4 |
| Molecular Weight | 260.03 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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 methanol, ethanol, DMSO |
| 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.) | 1992 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
- 3,5-Dichloro-4-(2,2,2-trifluoroethoxy)aniline (CAS 57946-62-0)
- 2,4-Dichloro-6-(3-fluorophenoxy)-1,3,5-triazine (CAS 112748-45-5)
- 2,4-Dichloro-6-(4-fluorophenoxy)-1,3,5-triazine (CAS 112748-46-6)
- 2,7-Dichloro-6-fluoroquinoline-3-carboxylic acid (CAS 131605-63-5)
- 2,3-Dichloro-5-(trifluoromethyl)isonicotinic acid (CAS 1135283-33-8)
- 1,3-Dichloro-4-nitro-2-(trifluoromethyl)benzene (CAS 1221272-83-8)
- 1,2-Dichloro-3-Nitro-4-(Trifluoromethyl)Benzene (CAS 133391-72-7)
- 2,3-Dichloro-1-nitro-4-(trifluoromethyl)benzene (CAS 1803801-74-2)
Recommended Standards
- 5-Iodo-1H-indazol-6-ol (CAS 1227268-78-1)
- 3-Iodo-1H-indazol-4-ol (CAS 1246307-74-3)
- 4-Iodo-2-methoxynicotinonitrile (CAS 1206969-73-4)
- 6-Iodo-1,3-dihydro-2H-pyrrolo[3,2-b]pyridin-2-one (CAS 1260381-60-9)
- 4-Hydroxy-2-methoxyquinoline (CAS 342412-18-4)
- 5-((Methylsulfonyl)methyl)-6-nitroquinoline (CAS 1710472-30-2)
- 6-Bromo-3-methylisoquinolin-1-amine (CAS 872018-41-2)
- 1-Isopropyl-1H-pyrazole-3,4-dicarboxylic acid (CAS 52942-78-6)
- 4′-Nitroacetanilide-2′,3′,5′,6′-d4 (CAS 68239-25-8)
- 2-Amino-N-isopropyl-N-(pyridin-2-ylmethyl)acetamide (CAS 1178299-58-5)
- 2-[4-(Cyclopentylamino)-3-hydroxyphenyl]-3-hydroxybenzo[h]chromen-4-one (CAS 1373232-43-9)
- Monosialoganglioside GM3 Sodium Salt (CAS 54827-14-4)
- 7-Chloro-1,2,3,4-tetrahydro-isoquinoline-1-carboxylic acid hydrochloride (CAS 1260637-91-9)
- [Glu]17-Semaglutide (CAS CATO-CPTD788604)
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