4-Chloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

Fluorene-d10

N-(4-chloro[13C6]phenyl)-N'-(3,4-dichloro[13C6]phenyl)[13C]urea , 1.2ml x 50ug/ml, methanol

2,4,6-Trimethylbenzophenone, 25mg