Supplier Page from Thermo Fisher Scientific for (+)-1,2-Bis[(2R,5R)-2,5-diethyl-1-phospholanyl]ethane, 97%
(4-Carboxybutyl)triphenylphosphonium bromide, 98% from Thermo Fisher Scientific
Calcium carbide from Thermo Fisher Scientific
N_e-2,4-Dinitrophenyl-N_a-Fmoc-L-lysine, 98% from Thermo Fisher Scientific
O-Acetylsalicyloyl chloride, 97% from Thermo Fisher Scientific