Dimethyl4',5'-diethynyl-[1,1':2',1''-terphenyl]-4,4''-dicarboxylate CAS 1670924-15-8
| CAS No. | 1670924-15-8 |
| Molecular Formula | C26H18O4 |
| Molecular Weight | 394.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, a hydroxyl group, an ether linkage, Dimethyl4',5'-diethynyl-[1,1':2',1''-terphenyl]-4,4''-dicarboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 394.42 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.
Dimethyl4',5'-diethynyl-[1,1':2',1''-terphenyl]-4,4''-dicarboxylate (CAS 1670924-15-8), molecular formula C26H18O4 and molecular weight 394.42 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), Dimethyl4',5'-diethynyl-[1,1':2',1''-terphenyl]-4,4''-dicarboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C26H18O4 |
| Molecular Weight | 394.42 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
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Recommended Standards
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- [1,1':4',1'':4'',1'''-Quaterphenyl]-4,4'''-dicarboxylic acid (CAS 143613-17-6)
- 1-(6-(Benzyloxy)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl)ethane-1,2-diyl diacetate (CAS 18006-25-2)
- tert-Butyl(ethoxy)dimethylsilane (CAS 17348-65-1)
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- 2-(2-Biphenyl-4-yl-vinyl)-6-hydroxy-benzoic acid methyl ester (CAS 1171924-89-2)
- Pregabalin Impurity 65 (CAS 869-02-3)
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- Atovaquone Impurity 4 (CAS 91161-85-2)
- (3AR,7aS)-tetrahydro-1H-indole-2,7(3H,7aH)-dione (CAS 115307-20-5)
- 4-[(3-methylpiperidin-1-yl)sulfonyl]aniline (CAS 109069-00-3)
- Ethyl 2-bromo-4-(difluoromethyl)thiazole-5-carboxylate (CAS 1631960-99-0)
- Neuropeptide Y (2-36) (human, rat) trifluoroacetate salt (CAS 123139-39-9)
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