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Substance Name: Focofilcon A [USAN]
RN: 31693-08-0

Classification Codes

  • Contact Lens Material (Hydrophilic)
  • TSCA Flag XU (Exempt from Reporting under Chemical Data Reporting Rule)

Molecular Formula

  • (C6-H10-O3.C4-H6-O2)x-

Molecular Weight

  • 216.231
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Names and Synonyms

Name of Substance

  • Focofilcon A [USAN]
  • Poly(hydroxyethyl methacrylate-methacrylic acid)hydrogel


  • 2-Hydroxyethyl methacrylate polymer with methacrylic acid
  • Focofilcon A

Systematic Names

  • 2-Propenoic acid, 2-methyl-, 2-hydroxyethyl ester, polymer with 2-methyl-2-propenoic acid
  • 2-Propenoic acid, 2-methyl-, polymer with 2-hydroxyethyl 2-methyl-2-propenoate

Registry Numbers

CAS Registry Number

  • 31693-08-0

Other Registry Number

  • 2099669-94-8

System Generated Number

  • 0031693080

Molecular Formulas

Molecular Formula

  • (C6-H10-O3.C4-H6-O2)x-

Molecular Formula Fragments

  • C4-H6-O2
  • C6-H10-O3

Structure Descriptors