((4-Chlorophenyl)ethynyl)trimethylsilane CAS 78704-49-1
| CAS No. | 78704-49-1 |
| Molecular Formula | C11H13ClSi |
| Molecular Weight | 208.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of ((4-Chlorophenyl)ethynyl)trimethylsilane is closely related to chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
((4-Chlorophenyl)ethynyl)trimethylsilane (CAS 78704-49-1), molecular formula C11H13ClSi and molecular weight 208.76 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H13ClSi, ((4-Chlorophenyl)ethynyl)trimethylsilane contains chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 208.76 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), ((4-Chlorophenyl)ethynyl)trimethylsilane 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 | C11H13ClSi |
| Molecular Weight | 208.76 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Cl-containing |
Related Chlorophenyl Standards
- [(3-Chlorophenyl)ethynyl]trimethylsilane (CAS 227936-62-1)
- 4-(3-Chlorophenyl)cyclohexanone (CAS 1048916-71-7)
- 1-(4-Chlorophenyl)-2-cyclopropylpropan-1-one 123989-29-7 C12H13ClO X5556 (CAS 123989-29-7)
- 3-(4-chlorophenyl)cyclohexan-1-one (CAS 136333-71-6)
- 3-(2-Chlorophenyl)-cyclohexanone (CAS 141632-22-6)
- 4-(4-Chlorophenyl)cyclohexanone (CAS 14472-80-1)
- 4-(2-Chlorophenyl)-cyclohexanone (CAS 180005-03-2)
- 3-Chlorophenyl cyclopentyl ketone (CAS 1855-40-9)
Recommended Standards
- SAR72FE8EH 814-94-8 Stannous oxalate Ethanedioic acid, tin(2+) salt (1:1) Oxalic acid, tin(2+) salt (1:1) (8CI) Tin(II) oxalate EINECS 212-414-0 Stavelan cinaty [Czech] Tin oxalate Tin(2+) oxalate Stavelan cinaty UNII-SAR72FE8EH EC 212-414-0 (CAS 814-94-8)
- Trifluoro(iodomethyl)borate (CAS 888854-43-1)
- Chloro(1H-inden-2-yl)dimethylsilane (CAS 240823-57-8)
- 36955-36-9 5-(butylthio)-3-chloro-1,2,4-thiadiazole 5-Butylsulfanyl-3-chloro-[1,2,4]thiadiazole A6362 (CAS 36955-36-9)
- 1,3-Dimethyl-4-phenyl-1H-pyrazol-5(4H)-one (CAS 1706-41-8)
- 2-Amino-4-methylheptanoic acid (CAS 101257-43-6)
- Benzoic acid, 4-(1-fluoroethenyl)-, methyl ester (CAS 201606-59-9)
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- 2,2,3,4,4,4-Hexafluorobutyric Acid (CAS 379-90-8)
- Benzyl (5-aminobicyclo[3.1.1]Heptan-1-yl)carbamate (CAS 1439907-87-5)
- 1-(Cyclobutylmethyl)-1H-imidazole-2-carboxylic acid (CAS 1439896-41-9)
- Semaglutide impurity 31 (CAS CATO-C4X-222631)
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