4-Isopentylphenol,1000 µg/mL,isooctane,1mL,

Irbesartan-d4 (2,3,5,6-phenyl-d4),ca. 100 µg/mL,MeOH,1mL,

Methanol

D5-threo-Chloramphenicol, 100µg/ml, Acetonitrile, 1ml