ADS740WS is 2-[7-(1,3-Dihydro-3,3-dimethy-1-(4-sulfobutyl)l-2H-indol-2-ylidene)-1,3,5-heptatrienyl]-3,3-dimethyl-1-(4-sulfobutyl)-1H-indolium innersalt, monosodium.

The chemical formula for ADS740WS is C35 H43 N2 O6 S2 Na.

  • Appearance: Light Blue Powder
  • Molecular weight: 674.81 g mol-1
  • Melting Point: >150oC (Decomp.)
  • Absorption maximum:  745 – 750 nm (in MeOH)
  • Photoluminescence:
  • Absorption coefficient: 1.6 x 105 L mol-1 cm-1
  • Recommended Solvents: Water, Methanol