ExEmExEm Off-white to light brown solid soluble in DMF or DMSO Store at -20°C under nitrogen or argon, and protect from light, especially when in solution C21H21N3 MW: 315 [38483-26-0] Off-white to light brown solid soluble in DMF or DMSO Store at -20°C under nitrogen or argon, and protect from light, especially when in solution C21H21N3 21213 MW: 315 [38483-26-0]