1,4-Diamino-2,3-dichloroanthraquinone CAS 81-42-5
| CAS No. | 81-42-5 |
| Molecular Formula | C14H8Cl2N2O2 |
| Molecular Weight | 307.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1,4-Diamino-2,3-dichloroanthraquinone is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1,4-Diamino-2,3-dichloroanthraquinone (CAS 81-42-5) is a high-purity analytical reference standard with the molecular formula C14H8Cl2N2O2 and a molecular weight of 307.13 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 1,4-Diamino-2,3-dichloroanthraquinone is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 307.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 1,4-Diamino-2,3-dichloroanthraquinone under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H8Cl2N2O2 |
| Molecular Weight | 307.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- (E)-2-(3,4-Dichlorobenzylidene)-6-hydroxybenzofuran-3(2h)-one (CAS 620545-98-4)
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- 3-((tert-Butoxycarbonyl)amino)-2,6-dichloroisonicotinic acid (CAS 1956379-65-9)
- 2-(2,4-Dichlorobenzylidene)-6-hydroxybenzofuran-3(2h)-one (CAS 637753-86-7)
- (1-Methylheptyl)phosphonic Acid (CAS 4730-70-5)
- Methyl 6-nitro-1H-indazole-4-carboxylate (CAS 885518-55-8)
- 2,2'-(Piperidine-4,4-diyl)diacetic acid (CAS 86748-14-3)
- (2R,4S)-2-(1,1-Dimethylethyl)-4-methyl-1,3-oxathiolan-5-one (CAS 476371-85-4)
- 2-(2,4-Difluorobenzenesulfonyl)-1-(4-ethoxyphenyl)ethan-1-one (CAS 1326877-00-2)
- 2-(3-Bromophenyl)-1H-indole-3-carboxylic acid (CAS 1098340-10-3)
- α-Pyrrolidinohexanophenone HCl (α-PHP HCl) (CAS 13415-59-3)
- 6-Bromo-4-(bromomethyl)-5-(difluoromethyl)nicotinic acid (CAS 1805256-36-3)
- Methyl 2,6-difluoro-3-(trifluoromethyl)benzoate (CAS 2089258-73-9)
- Semaglutide impurity 208 (CAS CATO-C4X-2226208)
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