Hollow Crystals from Buffer Solutions of Sodium Diethyl Barbiturate

Science  15 Jan 1960:
Vol. 131, Issue 3394, pp. 161
DOI: 10.1126/science.131.3394.161


Buffer Solutions of sodium 5,5'-diethyl barbiturate, after standing at 4° to 8°C for 7 weeks, were observed to contain large tubular crystals. The crystals appear to have the composition of 5.5'-diethyl bairbituric acid. They clan be grown readily from fresh seeded solutions.