5'-Methyl-[1,1':3',1"-terphenyl]-3,3"-dicarboxylic acid CAS 2451082-05-4
| CAS No. | 2451082-05-4 |
| Molecular Formula | C21H16O4 |
| Molecular Weight | 332.35 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 5'-Methyl-[1,1':3',1"-terphenyl]-3,3"-dicarboxylic acid.
5'-Methyl-[1,1':3',1"-terphenyl]-3,3"-dicarboxylic acid (CAS 2451082-05-4), molecular formula C21H16O4 and molecular weight 332.35 g/mol, is a CATO reference standard with documented purity and traceability.
5'-Methyl-[1,1':3',1"-terphenyl]-3,3"-dicarboxylic acid (C21H16O4) 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
CATO manufactures 5'-Methyl-[1,1':3',1"-terphenyl]-3,3"-dicarboxylic acid 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 | C21H16O4 |
| Molecular Weight | 332.35 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.) | 2000 |
Related Methyl Standards
- 5'-Methyl-[1,1':3',1''-terphenyl]-4,4''-dicarboxylic acid (CAS 1582811-97-9)
- [1,1':4',1''-Terphenyl]-4-yl(phenyl)methanone (CAS 5623-42-7)
- 5’-Phenyl-[1,1’:3’,1’’-terphenyl]-2’-carbaldehyde (CAS 85390-98-3)
- 2-([1,1':4',1''-Terphenyl]-2-yl)-4,4-dimethyl-4,5-dihydrooxazole (CAS 84392-22-3)
- 5'-Phenyl-[1,1':3',1''-terphenyl]-2'-thiol (CAS 4435-66-9)
- 5'-Phenyl-[1,1':3',1''-terphenyl]-2'-ol (CAS 3140-01-0)
- [1,1':3',1''-terphenyl]-3,3'',5,5''-tetracarbaldehyde (CAS 201734-76-1)
- [1,1':4',1''-Terphenyl]-2',4,4'',5'-tetracarbaldehyde (CAS 1985610-10-3)
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