4-((4-(Ethylamino)-3-methylphenyl)(4-(ethylimino)-3-methylcyclohexa-2,5-dien-1-ylidene)methyl)-6-hydroxybenzene-1,3-disulfonic acid CAS 4463-44-9
| CAS No. | 4463-44-9 |
| Molecular Formula | C25H28N2O7S2 |
| Molecular Weight | 532.63 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 4-((4-(Ethylamino)-3-methylphenyl)(4-(ethylimino)-3-methylcyclohexa-2,5-dien-1-ylidene)methyl)-6-hydroxybenzene-1,3-disulfonic acid.
CATO supplies 4-((4-(Ethylamino)-3-methylphenyl)(4-(ethylimino)-3-methylcyclohexa-2,5-dien-1-ylidene)methyl)-6-hydroxybenzene-1,3-disulfonic acid (CAS 4463-44-9), a certified reference material (molecular formula C25H28N2O7S2, MW 532.63 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 4-((4-(Ethylamino)-3-methylphenyl)(4-(ethylimino)-3-methylcyclohexa-2,5-dien-1-ylidene)methyl)-6-hydroxybenzene-1,3-disulfonic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 532.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
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 | C25H28N2O7S2 |
| Molecular Weight | 532.63 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Ethylamino Standards
- 3'-(Ethylamino)-2'-methyl-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-6'-yl trifluoromethanesulfonate (CAS 1403936-34-4)
- Ethyl 3-(ethylamino)but-2-enoate (CAS 13070-53-6)
- 4-(5-((2-(Ethylamino)-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)butanoic acid (CAS 469879-40-1)
- 3',6'-Bis(ethylamino)-2',7'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (CAS 41382-37-0)
- Ethyl 3-(4-(ethylamino)-3-nitro-N-(pyridin-2-yl)benzamido)propanoate (CAS 1260817-88-6)
- 5-[(Ethylamino)carbonyl]-1,4-dihydro-2,6-dimethyl-4-[2-(trifluoromethyl)phenyl]-3-pyridinecarboxylic Acid Methyl Ester 887407-06-9 Methyl 1,4-Dihydro-4-(2'-trifluoromethyl)phenyl-pyridine-3-carboxylate-5-ethyl Carboxamide (CAS 887407-06-9)
- 1,4-Bis[[2-(ethylamino)ethyl]amino]-9,10-anthracenedione (CAS 19853-97-5)
- 1-Ethyl-7-(3-((ethylamino)methyl)pyrrolidin-1-yl)-6,8-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 91188-00-0)
Recommended Standards
- 2,9-Di(anthracen-9-yl)-1,10-phenanthroline (CAS 204195-52-8)
- 4,4'-(((9H-Fluorene-9,9-diyl)bis(4,1-phenylene))bis(oxy))dianiline (CAS 47823-88-1)
- (11bS)-N-(2-Benzoylphenyl)-3,5-dihydro-4H-dinaphth[2,1-c:1',2'-e]azepine-4-acetamide (CAS 1614264-48-0)
- Z-Lys-Pro-4MbNA formiate salt (CAS 74305-53-6)
- 5-Methyl-3-(methylthio)-1-phenyl-1H-pyrazole (CAS 18714-79-9)
- 1-(2-Hydroxyethyl)-4-methyl-5-(2-(trifluoromethyl)phenyl)-1H-pyrrole-3-carboxylic acid (CAS 1632002-11-9)
- Methyl Succinamate (CAS 53171-39-4)
- 4-(difluoromethoxy)azepane (CAS 1997176-83-6)
- N'-(4-(Phenylamino)phenyl)pyrimidine-5-carboximidhydrazide (CAS 76521-25-0)
- Ethyl 3-(3-(tert-Butylthio)-1-(4-(5-fluoropyrimidin-2-yl)benzyl)-5-methoxy-1H-indol-2-yl)-2,2-dimethylpropanoate (CAS 1431698-04-2)
- 5-Methoxy-6-methylpyrimidin-4-amine (CAS 1739-61-3)
- 2-(5-Chloropyridin-2-yl)-2,2-difluoroacetic acid (CAS 1783941-90-1)
- Cefadroxil Impurity 6(Mixture of Diastereomers) (CAS CATO-C4X-12246)
- SAMS Peptide (CAS 125911-68-4)
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