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Substrates are enzyme substrates used in specific enzyme reactions and most of the time being used to monitor the enzyme reactions. Enzymes substrates are widely used in life science research. To review all biochemicals offered on this website check the main categories under Life Sciences which include both Thermo Scientific and Alfa Aesar product options.

  • 4-Methylumbelliferyl-alpha-L-iduronide sodium salt, synthetic, Thermo Scientific
  • 4-Nitrophenyl-alpha-L-fucopyranoside, Thermo Scientific
  • 4-Nitrophenyl-beta-D-glucopyranoside, Thermo Scientific
  • 4-Nitrophenyl-beta-D-glucuronide, Thermo Scientific
  • 4-Nitrophenyl-beta-D-xylopyranoside, Thermo Scientific
  • 5-Bromo-4-chloro-3-indolyl-beta-D-galactopyranoside (X-GAL), 99+%, Ultrapure, Thermo Scientific


Life Science

Metals & Materials


Analytical & Labware