Green-β-D-Gal (N-Methylindolyl-β-D-galactopyranoside) is a chromogenic substrate for β-galactosidase. Similar to X-Gal, but generates green colored precipitate on enzyme hydrolysis. White solid soluble in water and DMSO Store at 4°C and protect from light C15H19NO6 MW: 309.3 [207598-26-3]