MUP, free acid (4-Methylumbelliferyl phosphate, free acid) is a fluorogenic phosphatase substrate that releases the blue fluorescent dye 4-methyl-7-hydroxycoumarin. MUP free acid and its salt (10010) are the most widely used fluorogenic substrates for alkaline phosphatase detection.
λEx/λEm= 360/450 nm (end product)
White solid soluble in water and DMSO
Store desiccated at -20°C and protect from light