D6379-System Resolution Standard,Varied concentrations in Heptane

4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone-d4, 1000 μg/mL in MeOH

13种醛酮-DNPH衍生物混标,不同浓度溶于乙腈, Custom DNPH Standard@ Varied conc. In Acetonitrile