Description

2,4,6,8-Tetramethyl-2,4,6,8-tetraphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane (CAS No. 77-63-4) is a high-purity organosilicon compound with the molecular formula C₂₈H₃₂O₄Si₄. This cyclic tetrasiloxane derivative features a unique structure with alternating methyl and phenyl substituents, offering exceptional thermal stability and chemical resistance. It is widely utilized in advanced material science, particularly in the synthesis of silicone polymers, resins, and specialty coatings. The compound’s rigid cyclic framework and aromatic phenyl groups enhance its performance in high-temperature applications, making it ideal for research in polymer chemistry, nanotechnology, and surface modification. Available in various quantities, this product is rigorously tested to ensure ≥95% purity (GC) and is supplied with comprehensive analytical data, including ¹H NMR and FTIR spectra.

Properties

• CAS Number: 77-63-4
• Complexity: 576
• IUPAC Name: 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• InChI: InChI=1S/C28H32O4Si4/c1-33(25-17-9-5-10-18-25)29-34(2,26-19-11-6-12-20-26)31-36(4,28-23-15-8-16-24-28)32-35(3,30-33)27-21-13-7-14-22-27/h5-24H,1-4H3
• InChI Key: IRVZFACCNZRHSJ-UHFFFAOYSA-N
• Exact Mass: 544.13776564
• Molecular Formula: C28H32O4Si4
• Molecular Weight: 544.9
• SMILES: C[Si]1(O[Si](O[Si](O[Si](O1)(C)C2=CC=CC=C2)(C)C3=CC=CC=C3)(C)C4=CC=CC=C4)C5=CC=CC=C5
• Topological: 36.9
• Monoisotopic Mass: 544.13776564
• Synonyms: 77-63-4, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane, CYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAPHENYL-, 2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane, Tetramethyltetraphenylcyclotetrasiloxane, 3X941D1N9O, S730L28U5W, 2F641J843Q, 15331-54-1, 2′,4′,6,8-Tetramethyl-2,4,6′,8′-tetraphenylcyclotetrasiloxane, R-2,cis-4,trans-6,trans-8-tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane, trans-2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane, 2,4,6,8-Tetramethyl-2,4,6,8-tetraphenyl-[1,3,5,7,2,4,6,8]cyclotetrasiloxane, 4885-39-6, 5131-04-4, UNII-69V746D1JO, UNII-2F641J843Q, EINECS 201-045-0, 2,4,6,8-Tetramethyltetraphenylcyclotetrasiloxane, 5D1PCT0W4D, SCHEMBL206800, UNII-3X941D1N9O, UNII-S730L28U5W, DTXSID0058809, 69V746D1JO, MFCD01862826, tetraphenyltetramethylcyclo-tetrasiloxane, 2,4,6,8-Tetramethyltetraphenylcyclotetrasiloxane, (2alpha,4alpha,6beta,8beta)-, Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-, (2alpha,4alpha,6beta,8beta)-, AS-75553, Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-, (2.alpha.,4.alpha.,6.beta.,8.beta.)-, NS00041099, G78478, Q27254653, Q27258170, Q27261849, Q27288749, cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8- tetraphenyl-, 2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane, technical, 2,4,6,8-Tetramethyl-2alpha,4beta,6alpha,8beta-tetraphenylcyclotetrasiloxane, (2alpha,4alpha,6alpha,8alpha)-2,4,6,8-tetramethyltetraphenylcyclotetrasiloxane, (2alpha,4alpha,6alpha,8beta)-2,4,6,8-tetramethyltetraphenylcyclotetrasiloxane, (2alpha,4alpha,6beta,8beta)-2,4,6,8-tetramethyltetraphenylcyclotetrasiloxane, (2alpha,4beta,6alpha,8beta)-2,4,6,8-tetramethyltetraphenylcyclotetrasiloxane, 2,4,6,8-Tetramethyltetraphenylcyclotetrasiloxane, (2alpha,4alpha,6alpha,8beta)-, 2,4,6,8-Tetramethyltetraphenylcyclotetrasiloxane, (2alpha,4beta,6alpha,8beta)-, 2,4,6,8-TETRAMETHYL-2.ALPHA.,4.ALPHA.,6.ALPHA.,8.ALPHA.-TETRAPHENYLCYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYL-2.ALPHA.,4.BETA.,6.ALPHA.,8.BETA.-TETRAPHENYLCYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYLTETRAPHENYLCYCLOTETRASILOXANE, (2.ALPHA.,4.ALPHA.,6.ALPHA.,8.ALPHA.)-, 2,4,6,8-TETRAMETHYLTETRAPHENYLCYCLOTETRASILOXANE, (2.ALPHA.,4.ALPHA.,6.ALPHA.,8.BETA.)-, 2,4,6,8-TETRAMETHYLTETRAPHENYLCYCLOTETRASILOXANE, (2.ALPHA.,4.ALPHA.,6.BETA.,8.BETA.)-, 2,4,6,8-TETRAMETHYLTETRAPHENYLCYCLOTETRASILOXANE, (2.ALPHA.,4.BETA.,6.ALPHA.,8.BETA.)-, CYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAPHENYL-, (2.ALPHA.,4.ALPHA.,6.ALPHA.,8.ALPHA.)-, CYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAPHENYL-, (2.ALPHA.,4.ALPHA.,6.ALPHA.,8.BETA.)-, CYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAPHENYL-, (2.ALPHA.,4.BETA.,6.ALPHA.,8.BETA.)-, Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-, (2alpha,4alpha,6alpha,8beta)-, Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-, (2alpha,4beta,6alpha,8beta)-

Application

This compound serves as a key intermediate in the synthesis of phenyl-modified silicone resins, which are critical for high-performance coatings and encapsulants in electronics. Its thermal stability makes it suitable for research in heat-resistant polymers and ceramic precursors. Additionally, it is explored in the development of low-k dielectric materials for semiconductor applications due to its unique siloxane architecture.

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