1,4-Dihydroxy-5,8-bis(p-tolylamino)anthraquinone CAS 23941-48-2
| CAS No. | 23941-48-2 |
| Molecular Formula | C28H22N2O4 |
| Molecular Weight | 450.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,4-Dihydroxy-5,8-bis(p-tolylamino)anthraquinone (CAS 23941-48-2), molecular formula C28H22N2O4 and molecular weight 450.49 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C28H22N2O4, 1,4-Dihydroxy-5,8-bis(p-tolylamino)anthraquinone contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 450.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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-Dihydroxy-5,8-bis(p-tolylamino)anthraquinone 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 | C28H22N2O4 |
| Molecular Weight | 450.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 2 |
Related Dihydroxy Standards
- 1,2-Dihydroxy-5,8-bis(p-tolylamino)anthracene-9,10-dione (CAS 6636-38-0)
- 1,5-Dihydroxy-4,8-bis(p-tolylamino)anthracene-9,10-dione (CAS 20241-75-2)
- 17,21-Dihydroxy-pregn-5-ene-3,11,20-trione 3,20-Diethylene Ketal (CAS 101524-47-4)
- 17,21-Dihydroxy-pregn-4-ene-3,11,20-trione 3,20-diethylene ketal (CAS 881179-77-7)
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- 1-25-Dihydroxy-23,23-Difluorovitamin D3 (CAS 98040-59-6)
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- 6 β,21-Dihydroxy-Eplerenone (CAS 674781-15-8)
Recommended Standards
- 1,5-Bis((4-methoxyphenyl)amino)anthracene-9,10-dione (CAS 2944-16-3)
- (S)-2-(2-((R)-2-Amino-3-methylbutanamido)acetamido)-5-guanidino-N-(4-nitrophenyl)pentanamide (CAS 80798-23-8)
- 1,5-Bis(benzylamino)-4,8-dihydroxyanthracene-9,10-dione (CAS 82701-87-9)
- 2-(4-(3-((4-Oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoyl)piperazin-1-yl)nicotinonitrile (CAS 1825345-33-2)
- 5-Methyl-3-(3-phenoxyphenyl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 1326815-36-4)
- bicyclo[2.2.1]hept-5-ene-2-sulfonamide (CAS 7167-08-0)
- Cholecystokinin Precursor (24-32) (rat) H-Val-Pro-Val-Glu-Ala-Val-Asp-Pro-Met-OH (CAS 99291-20-0)
- N-(2,3-Dichlorophenyl)-2-{[3-({[(2,3-dichlorophenyl)carbamoyl]methyl}sulfanyl)propyl]sulfanyl}acetamide (CAS 301193-94-2)
- 1,4,5,8-Tetraamino-2,7-bis(3-butylphenoxy)anthracene-9,10-dione (CAS 88600-72-0)
- (R)-3,3'-Bis(1-naphthyl)-5,5',6,6',7,7',8,8'-octahydro-1,1'-bi-2,2'-naphthol (CAS 1205537-79-6)
- 4-Methoxy-2-methyl-5-nitroaniline (CAS 123343-96-4)
- Ethyl (E)-3-(3,4-dichlorophenyl)acrylate (CAS 82475-77-2)
- 1-(6-Ethoxy-5-methylpyridin-3-yl)ethan-1-amine (CAS 1355191-91-1)
- Semaglutide impurity 74 (CAS CATO-C4X-222674)
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