m-Xylene, 1000µg/ml in MeOH, 1ml

Omeprazole, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 73590-58-6

2-Methylbutyraldehyde, 250mg

D(-​)​-​Isoascorbic Acid (Erythorbic Acid), 10g