| CAS No. | 4435-66-9 |
| Molecular Formula | C24H18S |
| Molecular Weight | 338.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5'-Phenyl-[1,1':3',1''-terphenyl]-2'-thiol.
5'-Phenyl-[1,1':3',1''-terphenyl]-2'-thiol (CAS 4435-66-9) is a high-purity analytical reference standard with the molecular formula C24H18S and a molecular weight of 338.46 g/mol.
Owing to sulfur-containing functionality, a polycyclic aromatic system, 5'-Phenyl-[1,1':3',1''-terphenyl]-2'-thiol is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 338.46 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5'-Phenyl-[1,1':3',1''-terphenyl]-2'-thiol 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.
| Molecular Formula | C24H18S |
| Molecular Weight | 338.46 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |