Ethidium Homodimer III was developed by Biotium as an alternative to Ethidium Homodimer I. It has absorption and emission spectra similar to those of Ethidium Homodimer I, but stains DNA 45% brighter.     &lamba;Ex/&lamba;Em (with DNA) = 530/620 nm  Red solid soluble in DMSO, MeOH, or H2O  Store at 4°C and protect from light  MW: approx. 1000