Supplier Page from Thermo Fisher Scientific for (+)-1,2-Bis[(2S,5S)-2,5-diethyl-1-phospholanyl]benzene, 97%
(S)-(-)-2-Pyrrolidinone-5-carboxylic acid, 98% from Thermo Fisher Scientific
2-Iodo-p-xylene, 98% from Thermo Fisher Scientific
4-Sulfamidobenzoyl chloride Chemical complex, 95% from Thermo Fisher Scientific
Spermidine, 99% from Thermo Fisher Scientific