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Atomfair 2,2′,3,3′,5,5′-Hexamethyl-4,4′-dihydroxybiphenyl C18H22O2 CAS 19956-76-4

2,2′,3,3′,5,5′-Hexamethyl-4,4′-dihydroxybiphenyl (CAS No. 19956-76-4) is a high-purity biphenyl derivative with the molecular formula C18H22O2. This compound, also known by its IUPAC name 4-(4-hydroxy-2,3,5-trimethylphenyl)-2,3,6-trimethylphenol , features a symmetrically substituted biphenyl core with hydroxyl groups at the 4 and 4′ positions and methyl groups at the 2,2′,3,3′,5,5′ positions. Its unique sterically hindered phenolic structure makes it valuable for advanced research applications, particularly in polymer stabilization, antioxidant studies, and material science. The compound is supplied as a fine crystalline powder with ≥95% purity (HPLC), ensuring consistency for demanding laboratory use. Store in a cool, dry place, protected from light to maintain stability.

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Description

2,2′,3,3′,5,5′-Hexamethyl-4,4′-dihydroxybiphenyl (CAS No. 19956-76-4) is a high-purity biphenyl derivative with the molecular formula C18H22O2. This compound, also known by its IUPAC name 4-(4-hydroxy-2,3,5-trimethylphenyl)-2,3,6-trimethylphenol, features a symmetrically substituted biphenyl core with hydroxyl groups at the 4 and 4′ positions and methyl groups at the 2,2′,3,3′,5,5′ positions. Its unique sterically hindered phenolic structure makes it valuable for advanced research applications, particularly in polymer stabilization, antioxidant studies, and material science. The compound is supplied as a fine crystalline powder with ≥95% purity (HPLC), ensuring consistency for demanding laboratory use. Store in a cool, dry place, protected from light to maintain stability.

Properties

  • CAS Number: 19956-76-4
  • Complexity: 297
  • IUPAC Name: 4-(4-hydroxy-2,3,5-trimethyl-phenyl)-2,3,6-trimethyl-phenol
  • InChI: InChI=1S/C18H22O2/c1-9-7-15(11(3)13(5)17(9)19)16-8-10(2)18(20)14(6)12(16)4/h7-8,19-20H,1-6H3
  • InChI Key: IOJCFCLZQBXCIQ-UHFFFAOYSA-N
  • Exact Mass: 270.161979940
  • Molecular Formula: C18H22O2
  • Molecular Weight: 270.4
  • SMILES: CC1=CC(=C(C(=C1O)C)C)C2=C(C(=C(C(=C2)C)O)C)C
  • Topological: 40.5
  • Monoisotopic Mass: 270.161979940
  • Synonyms: 19956-76-4, 2,2′,3,3′,5,5′-HEXAMETHYL-4,4′-DIHYDROXYBIPHENYL, 2,2′,3,3′,5,5′-hexamethyl-[1,1′-biphenyl]-4,4′-diol, 4,4′-Bi[2,3,6-trimethylphenol], [1,1′-Biphenyl]-4,4′-diol, 2,2′,3,3′,5,5′-hexamethyl-, 4-(4-hydroxy-2,3,5-trimethylphenyl)-2,3,6-trimethylphenol, 4,4′-Dihydroxy-2,2′,3,3′,5,5′-hexamethylbiphenyl, 2,2′,3,3′,5,5′-Hexamethyl[1,1′-biphenyl]-4,4′-diol, MFCD00274654, SCHEMBL1176388, DTXSID50350860, AKOS032948066, AS-69318, DB-375998, CS-0159349, D5280, I12072, 2,2′,3,3′,6,6′-hexamethyl-4,4′-biphenol, 2,2′,3,3′,5,5′-Hexamethyl-[1,1′-biphenyl]-4,4′-diol, 99%

Application

This compound is primarily used as a stabilizer and antioxidant in polymer research due to its sterically hindered phenolic structure. It finds applications in studying oxidative degradation mechanisms in plastics, elastomers, and synthetic resins. Researchers also utilize it as a building block for synthesizing advanced materials with tailored thermal and oxidative stability. Its symmetrical biphenyl core makes it a candidate for liquid crystal and supramolecular chemistry studies.

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

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Certain molecules may be protected by active patents or regulatory restrictions.

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  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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