1,4-Bis((4-(4-chlorophenoxy)phenyl)amino)anthracene-9,10-dione CAS 26931-39-5
| CAS No. | 26931-39-5 |
| Molecular Formula | C38H24Cl2N2O4 |
| Molecular Weight | 643.51 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 1,4-Bis((4-(4-chlorophenoxy)phenyl)amino)anthracene-9,10-dione.
1,4-Bis((4-(4-chlorophenoxy)phenyl)amino)anthracene-9,10-dione (CAS 26931-39-5) is a high-purity analytical reference standard with the molecular formula C38H24Cl2N2O4 and a molecular weight of 643.51 g/mol.
1,4-Bis((4-(4-chlorophenoxy)phenyl)amino)anthracene-9,10-dione (C38H24Cl2N2O4) 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C38H24Cl2N2O4 |
| Molecular Weight | 643.51 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 27.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- Dotinurad Impurity 155 (CAS CATO-C4X-2494155)
- lifitegrast Impurity 20 (CAS 2295862-24-5)
- rac-1,2-Distearoyl-3-chloropropanediol (CAS 72468-92-9)
- N-(4,6-Bis(3-(trifluoromethoxy)phenoxy)pyrimidin-5-yl)-4-(tert-butyl)benzenesulfonamide (CAS 866154-89-4)
- 1-({3-[(dimethylamino)methyl]phenyl}sulfanyl)-N,N-dimethylformamide (CAS 1311318-22-5)
- 1-Ethyl-4-phenyl-6,7-dihydrofuro[3,2-g]quinazolin-2(1H)-one (CAS 61070-70-0)
- (4-chloro-3-fluorophenyl)urea (CAS 1249871-03-1)
- 4-Oxo-1-(thiophene-2-sulfonyl)pyrrolidine-2-carboxylic acid (CAS 1219300-29-4)
- Cyantraniliprole Impurity A (CAS 736994-61-9)
- 4-Chloro-1,6-dimethyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 98550-75-5)
- (4-Fluorophenyl)-(4-isobutoxyphenyl)-methanone (CAS 330684-46-3)
- Eriochrome cyanine R indicator (C.I. 43820) (CAS 3564-18-9)
- 1-(4-Bromo-3-fluorobenzyl)-4-methylpiperidine (CAS 1704095-76-0)
- Semaglutide impurity 80 (CAS CATO-C4X-222680)
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