1,2,4-Trichlorodibenzo-p-dioxin CAS 39227-58-2
| CAS No. | 39227-58-2 |
| Molecular Formula | C12H5Cl3O2 |
| Molecular Weight | 287.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1,2,4-Trichlorodibenzo-p-dioxin.
1,2,4-Trichlorodibenzo-p-dioxin (CAS 39227-58-2), molecular formula C12H5Cl3O2 and molecular weight 287.53 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H5Cl3O2, 1,2,4-Trichlorodibenzo-p-dioxin contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 287.53 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C12H5Cl3O2 |
| Molecular Weight | 287.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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 chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl-containing |
Related Trichlorodibenzo Standards
- 1,2,3-Trichlorodibenzo-p-dioxin (CAS 54536-17-3)
- 1,7,8-Trichlorodibenzo-p-dioxin (CAS 82306-65-8)
- 2,3,7-Trichlorodibenzo-p-dioxin (CAS 33857-28-2)
- 3,7,8-Trichlorodibenzo[b,e][1,4]dioxin-2-amine (CAS 71721-80-7)
- 1,3,7-Trichlorodibenzo[b,d]furan (CAS 64560-16-3)
- 1,4,8-Trichlorodibenzo[b,d]furan (CAS 64560-14-1)
- 1,6,7-Trichlorodibenzo[b,d]furan (CAS 83704-46-5)
- 1,6,8-Trichlorodibenzo[b,d]furan (CAS 82911-59-9)
Recommended Standards
- 5-chloro-7-iodo-1H-pyrazolo[3,4-c]pyridine (CAS 1951371-15-5)
- 2-(Bromomethyl)-5-fluorobenzenesulfonyl chloride (CAS 1820717-41-6)
- 2-Bromo-4-fluoro-5-methylbenzenesulfonyl Chloride (CAS 874804-16-7)
- 4-(Bromomethyl)-2-fluorobenzenesulfonyl chloride (CAS 1820684-91-0)
- 2-Bromo-1-(5-bromobenzofuran-2-yl)ethan-1-one (CAS 7039-76-1)
- Ethyl 1-{1-methyl-1h-pyrazolo[3,4-d]pyrimidin-4-yl}-1h-pyrazole-4-carboxylate (CAS 1333706-51-6)
- Methyl 2-(3-aminophenyl)acetate (CAS 52913-11-8)
- 2-(4-(3-phenylquinoxalin-2-yl)phenyl)propan-2-amine hydrochloride (CAS 473382-50-2)
- (R)-3-Amino-3-(3,5-bis(trifluoromethyl)phenyl)propanoic acid (CAS 1241684-08-1)
- 2-(Methylamino)-2-phenylethanol (CAS 27594-65-6)
- 5,6-Dihydroxy-3-methylbenzofuran-2-carboxylic acid (CAS 21452-90-4)
- benzyl N-(3,3-difluorocyclobutyl)carbamate (CAS 939399-53-8)
- 1-(2-bromo-1-fluoroethyl)-4-methoxybenzene (CAS 66472-42-2)
- Peptide 442 (CAS CATO-CPTD788442)
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