4,4''-Dimethyl-[1,1':4',1''-terphenyl]-2',5'-dicarboxylicacid CAS 1352791-01-5
| CAS No. | 1352791-01-5 |
| Molecular Formula | C22H18O4 |
| Molecular Weight | 346.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4,4''-Dimethyl-[1,1':4',1''-terphenyl]-2',5'-dicarboxylicacid (CAS 1352791-01-5), a certified reference material (molecular formula C22H18O4, MW 346.38 g/mol) for analytical method development and quality control.
4,4''-Dimethyl-[1,1':4',1''-terphenyl]-2',5'-dicarboxylicacid (C22H18O4) contains a flavonoid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C22H18O4 |
| Molecular Weight | 346.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
Related Dimethyl Standards
- 2',5'-Dimethyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid (CAS 115213-33-7)
- 1,4-Dimethyl 2,5-diphenylbenzene-1,4-dicarboxylate (CAS 16308-63-7)
- 2-((5,7-Dimethyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)thio)-1-(5-fluoro-2-methoxyphenyl)ethan-1-one (CAS 871797-45-4)
- 3,4-Dimethyl-5-hexen-3-ol (CAS 67760-91-2)
- 9,10-Dimethyl-9,10-dihydro-9,10-[1,2]benzenoanthracene-2,3,6,7-tetraol (CAS 876460-51-4)
- 2-(4-Acetyl-3,5-dimethyl-1H-pyrrol-2-yl)-2-oxoethyl 2-(methylthio)nicotinate (CAS 792960-98-6)
- Dimethyl-{6-[4-(1-methyl-1H-pyrazol-3-yl)-phenyl]-4-trifluoromethyl-pyridin-2-yl}-amine (CAS 1311279-45-4)
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Recommended Standards
- N4,N6-Dibenzylpyrimidine-4,6-dicarboxamide (CAS 135002-40-3)
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- 4-Chloro-2-methyl-5-(prop-2-yn-1-ylamino)pyridazin-3(2H)-one (CAS 124414-87-5)
- 1-Decene, polymer with 1-octene, hydrogenated (CAS 66070-54-0)
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- Triallyl Cyanurate (CAS 101-37-1)
- 2-Ethoxy-5-(piperidin-2-yl)pyridine (CAS 1270463-32-5)
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- 7-(1,1-Difluoroethyl)-6,7-dihydropyrazolo[1,5-a]pyridin-4(5H)-one (CAS 2489784-04-3)
- 4-(2-(5-Cyclopropyl-1H-1,2,4-triazol-3-yl)ethyl)morpholine (CAS 1279213-74-9)
- (Ser(PO?H?)2?2)-Tau Peptide (260-264) PAb Blocking trifluoroacetate salt (CAS 2022956-57-4)
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