4,7-Dichloroisoindoline-1,3-dione CAS 55789-50-9
| CAS No. | 55789-50-9 |
| Molecular Formula | C8H3Cl2NO2 |
| Molecular Weight | 216.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4,7-Dichloroisoindoline-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.
4,7-Dichloroisoindoline-1,3-dione (CAS 55789-50-9) is a high-purity analytical reference standard with the molecular formula C8H3Cl2NO2 and a molecular weight of 216.02 g/mol.
Based on its molecular formula C8H3Cl2NO2, 4,7-Dichloroisoindoline-1,3-dione contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 216.02 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C8H3Cl2NO2 |
| Molecular Weight | 216.02 g/mol |
| Appearance | Off-white to pale 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 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloroisoindoline Standards
Recommended Standards
- 3-Fluoro-4-biphenylboronic acid (CAS 409108-13-0)
- 6,7-Dichloropyrido[2,3-d]pyrimidin-4(3H)-one (CAS 2820180-24-1)
- 3,5-Dichloro-4-cyanobenzoic acid (CAS 90008-06-3)
- 6,8-Dichlorobenzo[d][1,2,3]triazin-4(3H)-one (CAS 60233-65-0)
- 5-(4-Chlorophenyl)-4-phenyl-4H-1,2,4-triazol-3-yl hydrosulfide (CAS 93300-54-0)
- Methyl 3-hydroxy-2,2,3-trimethylbutanoate (CAS 86425-96-9)
- 5α-Pregnane-3-one-20α-ol (CAS 516-59-6)
- 1,3,4,5-Tetrahydropyrano[4,3-b]indole (CAS 784143-97-1)
- 2-(3-Methoxyphenyl)-1-{4-[6-(trifluoromethyl)pyrimidin-4-yl]piperazin-1-yl}ethan-1-one (CAS 1775526-93-6)
- Phenol, 4-(4-methyl-1-piperazinyl)- (CAS 163210-63-7)
- Letrozole Impurity 10 (CAS CATO-C4X-182910)
- (E)-4-(4-ethoxystyryl)-8-phenoxy-2,3-dihydrothieno[3,2-c]quinoline (CAS 866018-63-5)
- 2-(Methyl((3-(methylthio)pyrazin-2-yl)methyl)amino)acetic acid (CAS 1353943-65-3)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
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