2,8-Dibromodibenzofuran, 1.2ml x 50ug/ml, toluene

U{13C18}-Sterigmatocystine, 25µg/mL, Solvent-acetonitrile, Unit 1.2mL, # of units-1, Cas.no.

Phenanthrene-d10, 1000µg/ml in MethyleneChloride, 1ml

2,2',4,4',5,6'-Hexabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane