43 &lamba; Ex/&lamba; Em = 353/520 nm ε= 65,000 Light yellow solid soluble in water and DMSO Store at 4°C and protect from light, especially in solution C10H7NNa2O9S3 MW: 427 [5398-34-5] &lamba; Ex/&lamba; Em = 353/520 nm ExEm ε= 65,000 Light yellow solid soluble in water and DMSO Store at 4°C and protect from light, especially in solution C10H7NNa2O9S3 107293 MW: 427 [5398-34-5]