Erbium (Er)

alpha alpha alpha (20R,23R,24R)-4 alpha,23,24-Trimethylcholestane, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no. 146276-37-1

Sulfur (S)

Solanine, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 20562-02-1