Supplier Page from Thermo Fisher Scientific for Sulfur in Light Mineral Oil standard solution, Specpure:r, 10µmg/g (0.0010%)
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Emodin, 95%, tech from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific