Ex (pH 3) = 458 nm &lamba; Ex/&lamba; Em (after photocrosslinking to nucleic acid) = 510/600 nm6 ExEm6 Orange solid soluble in DMF, or ethanol Store desiccated at 4oC or -20oC and protect from light, especially in solution oo C21H18BrN5 21185 MW: 420 [58880-05-0]